Extinction and coexistence of competing prey species in ecological systems. - Ranjit Kumar Upadhyay; S. R. K. Iyengar (J. Comput. Methods Sci. Eng., 2006)

Chaos in eco-epidemiological problem of the Salton Sea and its possible control. - Ranjit Kumar Upadhyay; Nandadulal Bairagi; Kusumika Kundu; Joydev Chattopadhyay (Appl. Math. Comput., 2008)

Dynamics of an ecological model living on the edge of chaos. - Ranjit Kumar Upadhyay (Appl. Math. Comput., 2009)

Observability of Chaos and Cycles in Ecological Systems: Lessons from predator-prey Models. - Ranjit Kumar Upadhyay (Int. J. Bifurc. Chaos, 2009)

Chaos control and synchronization of a three-species food chain model via Holling functional response. - Xiang-Jun Wu; Jie Li; Ranjit Kumar Upadhyay (Int. J. Comput. Math., 2010)

Challenges of living in the harsh environments: A mathematical modeling study. - Ranjit Kumar Upadhyay; Vikas Rai; Sharada Nandan Raw (Appl. Math. Comput., 2011)

Diffusion-Driven Instabilities and Spatio-Temporal Patterns in an Aquatic predator-prey System with Beddington-Deangelis Type Functional Response. - Ranjit Kumar Upadhyay; N. K. Thakur; Vikas Rai (Int. J. Bifurc. Chaos, 2011)

Nonlinear Phenomena in Biology and Medicine. - Vikas Rai; Sreenivasan Rajamoni Nadar; Ranjit Kumar Upadhyay (Comput. Math. Methods Medicine, 2012)

Spatiotemporal dynamics in a delayed diffusive predator model. - Shuling Yan; Xinzhe Lian; Weiming Wang 001; Ranjit Kumar Upadhyay (Appl. Math. Comput., 2013)

The role of top predator interference on the dynamics of a food chain model. - Ranjit Kumar Upadhyay; Raid Kamel Naji; Sharada Nandan Raw; Balram Dubey (Commun. Nonlinear Sci. Numer. Simul., 2013)

Modeling the Complex Dynamics of Epidemic Spread Under Allee Effect. - Parimita Roy; Ranjit Kumar Upadhyay (RAIT, 2014)

Spread of a disease and its effect on population dynamics in an eco-epidemiological system. - Ranjit Kumar Upadhyay; Parimita Roy (Commun. Nonlinear Sci. Numer. Simul., 2014)

Deciphering Dynamics of Epidemic Spread: The Case of Influenza Virus. - Ranjit Kumar Upadhyay; Parimita Roy; Vikas Rai (Int. J. Bifurc. Chaos, 2014)

Dynamics of generalist predator in a stochastic environment: Effect of delayed growth and prey refuge. - Debaldev Jana; Rashmi Agrawal; Ranjit Kumar Upadhyay (Appl. Math. Comput., 2015)

Complex Dynamics of Wetland Ecosystem with Nonlinear Harvesting: Application to Chilika Lake in Odisha, India. - Ranjit Kumar Upadhyay; Satish Kumar Tiwari; Parimita Roy (Int. J. Bifurc. Chaos, 2015)

Long time dynamics of a three-species food chain model with Allee effect in the top predator. - Rana D. Parshad; Emmanuel Quansah; Kelly J. Black; Ranjit Kumar Upadhyay; Satish Kumar Tiwari; Nitu Kumari (Comput. Math. Appl., 2016)

Predator interference effects on biological control: The "paradox" of the generalist predator revisited. - Rana D. Parshad; Suman Bhowmick; Emmanuel Quansah; Aladeen Al Basheer; Ranjit Kumar Upadhyay (Commun. Nonlinear Sci. Numer. Simul., 2016)

Disease Spread and Its Effect on Population Dynamics in Heterogeneous Environment. - Ranjit Kumar Upadhyay; Parimita Roy (Int. J. Bifurc. Chaos, 2016)

Deciphering Dynamics of Recent Epidemic Spread and Outbreak in West Africa: The Case of Ebola Virus. - Ranjit Kumar Upadhyay; Parimita Roy (Int. J. Bifurc. Chaos, 2016)

Dynamical Behaviors of Fuzzy SIR Epidemic Model. - Renu Verma; S. P. Tiwari; Ranjit Kumar Upadhyay (EUSFLAT/IWIFSGN (3), 2017)

Mixed Mode Oscillations and Synchronous Activity in Noise Induced Modified Morris-Lecar Neural System. - Ranjit Kumar Upadhyay; Argha Mondal; Wondimu Teka (Int. J. Bifurc. Chaos, 2017)

Fractional-order leaky integrate-and-fire model with long-term memory and power law dynamics. - Wondimu Teka; Ranjit Kumar Upadhyay; Argha Mondal (Neural Networks, 2017)

Estimation of biophysical parameters in a neuron model under random fluctuations. - Ranjit Kumar Upadhyay; Chinmoy Paul; Argha Mondal; Gajendra K. Vishwakarma (Appl. Math. Comput., 2018)

Spiking and bursting patterns of fractional-order Izhikevich model. - Wondimu Teka; Ranjit Kumar Upadhyay; Argha Mondal (Commun. Nonlinear Sci. Numer. Simul., 2018)

The Gestation Delay: A Factor Causing Complex Dynamics in Gause-Type Competition Models. - Zizhen Zhang; Ranjit Kumar Upadhyay; Rashmi Agrawal; Jyotiska Datta (Complex., 2018)

Emergence of Spatial Patterns in a Damaged Diffusive Eco-Epidemiological System. - Ranjit Kumar Upadhyay; Jyotiska Datta; Yueping Dong; Yasuhiro Takeuchi (Int. J. Bifurc. Chaos, 2018)

Bifurcation analysis of an e-epidemic model in wireless sensor network. - Ranjit Kumar Upadhyay; Sangeeta Kumari (Int. J. Comput. Math., 2018)

Global Stability of Worm Propagation Model with Nonlinear Incidence Rate in Computer Network. - Ranjit Kumar Upadhyay; Sangeeta Kumari (Int. J. Netw. Secur., 2018)

Virus dynamics of a distributed attack on a targeted network: Effect of firewall and optimal control. - Sangeeta Kumari; Prerna Singh; Ranjit Kumar Upadhyay (Commun. Nonlinear Sci. Numer. Simul., 2019)

Global dynamics of stochastic predator-prey model with mutual interference and prey defense. - Ranjit Kumar Upadhyay; Rana D. Parshad; Kwadwo Antwi-Fordjour; Emmanuel Quansah; Sarita Kumari (J. Appl. Math. Comput., 2019)

Transmission dynamics of epidemic spread and outbreak of Ebola in West Africa: fuzzy modeling and simulation. - Renu Verma; S. P. Tiwari; Ranjit Kumar Upadhyay (J. Appl. Math. Comput., 2019)

Modeling the fear effect and stability of non-equilibrium patterns in mutually interfering predator-prey systems. - Vandana Tiwari; Jai Prakash Tripathi; Swati Mishra 007; Ranjit Kumar Upadhyay (Appl. Math. Comput., 2020)

Exploring Complex Dynamics of Spatial Predator-Prey System: Role of Predator Interference and Additional Food. - Vandana Tiwari; Jai Prakash Tripathi; Debaldev Jana; Satish Kumar Tiwari; Ranjit Kumar Upadhyay (Int. J. Bifurc. Chaos, 2020)

Explosive tritrophic food chain models with interference: A comparative study. - Debaldev Jana; Ranjit Kumar Upadhyay; Rashmi Agrawal; Rana D. Parshad; Aladeen Al Basheer (J. Frankl. Inst., 2020)

Conserving the European Bonelli's eagle in spatiotemporal domain: Lesson from its feeding pattern. - Ranjit Kumar Upadhyay (Comput. Math. Methods, 2021)

Synchronization and Pattern Formation in a Memristive Diffusive Neuron Model. - Sanjeev Kumar Sharma; Arnab Mondal; Argha Mondal; Ranjit Kumar Upadhyay; Jun Ma 003 (Int. J. Bifurc. Chaos, 2021)

Exploring the behavior of malware propagation on mobile wireless sensor networks: Stability and control analysis. - Sangeeta Kumari; Ranjit Kumar Upadhyay (Math. Comput. Simul., 2021)

Exploring the Dynamics of a Malware Propagation Model and Its Control Strategy. - Sangeeta Kumari; Ranjit Kumar Upadhyay (Wirel. Pers. Commun., 2021)

Emergence of Turing patterns and dynamic visualization in excitable neuron model. - Arnab Mondal; Ranjit Kumar Upadhyay; Argha Mondal; Sanjeev Kumar Sharma (Appl. Math. Comput., 2022)

Editorial: Modeling brain function at the level of neurons and circuits via computational and data-driven approaches. - Ranjit Kumar Upadhyay; Dibakar Ghosh; M. A. Aziz-Alaoui; Muhammet Uzuntarla (Frontiers Comput. Neurosci., 2022)

Cross diffusion induced spatiotemporal pattern in diffusive nutrient-plankton model with nutrient recycling. - Sarita Kumari; Satish Kumar Tiwari; Ranjit Kumar Upadhyay (Math. Comput. Simul., 2022)

Combating COVID-19 crisis and predicting the second wave in Europe: an Age-structured modeling. - Ranjit Kumar Upadhyay; Sourin Chatterjee; Parimita Roy; Dyuti Bhardwaj (J. Appl. Math. Comput., 2022)

Modelling and analysis of delayed tumour-immune system with hunting T-cells. - Kaushik Dehingia; Parthasakha Das; Ranjit Kumar Upadhyay; Arvind Kumar Misra; Fathalla A. Rihan; Kamyar Hosseini (Math. Comput. Simul., 2023)

Blow-Up Dynamics and Synchronization in Tri-Trophic Food Chain Models. - Eric M. Takyi; Rana D. Parshad; Ranjit Kumar Upadhyay; Vikas Rai (Algorithms, 2023)

Impact of Allee Effect on the Spatio-Temporal Behavior of a Diffusive Epidemic Model in Heterogenous Environment. - Sattwika Acharya; Ranjit Kumar Upadhyay; Bapin Mondal (Int. J. Bifurc. Chaos, 2023)

Global Stabilization of Incommensurate Real Order Time-Varying Nonlinear Uncertain Systems. - Bichitra Kumar Lenka; Ranjit Kumar Upadhyay (IEEE Trans. Circuits Syst. II Express Briefs, 2024)

New results on dynamic output state feedback stabilization of some class of time-varying nonlinear Caputo derivative systems. - Bichitra Kumar Lenka; Ranjit Kumar Upadhyay (Commun. Nonlinear Sci. Numer. Simul., 2024)

How predator harvesting affects prey-predator dynamics in deterministic and stochastic environments? - Bapin Mondal; Sayan Mandal; Pankaj Kumar Tiwari; Ranjit Kumar Upadhyay (Appl. Math. Comput., 2025)

Canard cycle, relaxation oscillation and cross-diffusion induced pattern formation in a slow-fast ecological system with weak Allee effect. - Jiawen Jia; Dongpo Hu; Ranjit Kumar Upadhyay; Zhaowen Zheng; Ningning Zhu; Ming Liu (Commun. Nonlinear Sci. Numer. Simul., 2025)

Hidden memory chaotic attractors in simple nonequilibrium fractional order systems. - Bichitra Kumar Lenka; Ranjit Kumar Upadhyay (Commun. Nonlinear Sci. Numer. Simul., 2025)

Existence of global attractor in reaction-diffusion model of obesity-induced Alzheimer's disease and its control strategies. - Ranjit Kumar Upadhyay; Debasish Pradhan; Rana D. Parshad; Parimita Roy (Commun. Nonlinear Sci. Numer. Simul., 2025)

Wave of chaos and Turing patterns in Rabbit-Lynx dynamics: Impact of fear and its carryover effects. - Ranjit Kumar Upadhyay; Namrata Mani Tripathi; Dipesh Barman (Commun. Nonlinear Sci. Numer. Simul., 2025)

New order-dependent conditions to control a class of nonlinear real-order systems. - Bichitra Kumar Lenka; Ranjit Kumar Upadhyay (Eur. J. Control, 2025)

Deciphering the calcium dynamics of a fractional order Alzheimer's disease model in astrocytes and their networks. - Debasish Pradhan; Ranjit Kumar Upadhyay (Expert Syst. Appl., 2025)

Controlling memory chaos and synchronization in real order nonlinear systems. - Bichitra Kumar Lenka; Ranjit Kumar Upadhyay (J. Frankl. Inst., 2025)

New globally Lipschitz no-equilibrium fractional order systems and control of hidden memory chaotic attractors. - Bichitra Kumar Lenka; Ranjit Kumar Upadhyay (J. Comput. Sci., 2025)

Bifurcation analysis and exploration of noise-induced transitions of a food chain model with Allee effect. - Sayan Mandal; Sudip Samanta; Pankaj Kumar Tiwari; Ranjit Kumar Upadhyay (Math. Comput. Simul., 2025)