Fuzzy stability of a functional equation associated with inner product spaces. - Choonkil Park (Fuzzy Sets Syst., 2009)

Functional inequalities in non-Archimedean Banach spaces. - Yeol Je Cho; Choonkil Park; Reza Saadati (Appl. Math. Lett., 2010)

Non-Archimedean L-fuzzy normed spaces and stability of functional equations. - Reza Saadati; Choonkil Park (Comput. Math. Appl., 2010)

Hyers-Ulam stability of additive set-valued functional equations. - Gang Lu; Choonkil Park (Appl. Math. Lett., 2011)

Fixed points and stability of the Cauchy-Jensen functional inequality in fuzzy Banach algebras. - Choonkil Park (Appl. Math. Lett., 2011)

Stability of some set-valued functional equations. - Choonkil Park; Donal O'Regan; Reza Saadati (Appl. Math. Lett., 2011)

Fuzzy *-homomorphisms and fuzzy *-derivations in induced fuzzy C*-algebras. - Choonkil Park; Jung Rye Lee; Themistocles M. Rassias; Reza Saadati (Math. Comput. Model., 2011)

Generalized Ulam-Hyers stability of random homomorphisms in random normed algebras associated with the Cauchy functional equation. - Choonkil Park; Jung Rye Lee; Dong Yun Shin (Appl. Math. Lett., 2012)

Picture Fuzzy Filters of Pseudo-BCI Algebras. - Xiaohong Zhang 001; Chunxin Bo; Choonkil Park (FSDM, 2017)

On regular filters and well filters of pseudo-BCI algebras. - Xiaohong Zhang 001; Choonkil Park (ICNC-FSKD, 2017)

SDMGRS: Soft Dominance Based Multi Granulation Rough Sets and Their Applications in Conflict Analysis Problems. - Noor Rehman; Abbas Ali; Muhammad Irfan Ali; Choonkil Park (IEEE Access, 2018)

On Homomorphism Theorem for Perfect Neutrosophic Extended Triplet Groups. - Xiaohong Zhang 001; Xiaoyan Mao; Florentin Smarandache; Choonkil Park (Inf., 2018)

The lattice generated by hesitant fuzzy filters in pseudo-BCI algebras. - Chunxin Bo; Xiaohong Zhang 001; Songtao Shao; Choonkil Park (J. Intell. Fuzzy Syst., 2018)

Multi-granulation rough filters and rough fuzzy filters in Pseudo-BCI algebras. - Songtao Shao; Xiaohong Zhang 001; Chunxin Bo; Choonkil Park (J. Intell. Fuzzy Syst., 2018)

Soft set theoretical approach to pseudo-BCI algebras. - Xiaohong Zhang 001; Choonkil Park; Supeng Wu (J. Intell. Fuzzy Syst., 2018)

New Operations of Totally Dependent-Neutrosophic Sets and Totally Dependent-Neutrosophic Soft Sets. - Xiaohong Zhang 001; Chunxin Bo; Florentin Smarandache; Choonkil Park (Symmetry, 2018)

Generalized Interval Neutrosophic Choquet Aggregation Operators and Their Applications. - Xin Li 045; Xiaohong Zhang 001; Choonkil Park (Symmetry, 2018)

Ulam's type stability of higher order nonlinear delay differential equations via integral inequality of Grönwall-Bellman-Bihari's type. - Akbar Zada; Wajid Ali; Choonkil Park (Appl. Math. Comput., 2019)

Medicines selection via fuzzy upward β-covering rough sets. - Abbas Ali; Noor Rehman; Sun Young Jang; Choonkil Park (J. Intell. Fuzzy Syst., 2019)

Variable precision multi decision λ-soft dominance based rough sets and their applications in conflict problems. - Noor Rehman; Abbas Ali; Syed Inayat Ali Shah; Muhammad Irfan Ali; Choonkil Park (J. Intell. Fuzzy Syst., 2019)

On neutrosophic extended triplet groups (loops) and Abel-Grassmann's groupoids (AG-groupoids). - Xiaohong Zhang 001; Xiaoying Wu; Xiaoyan Mao; Florentin Smarandache; Choonkil Park (J. Intell. Fuzzy Syst., 2019)

Oscillation Results for Higher Order Differential Equations. - Choonkil Park; Osama Moaaz; Omar Bazighifan (Axioms, 2020)

Multivalued Fixed Point Results for Two Families of Mappings in Modular-Like Metric Spaces with Applications. - Tahair Rasham; Abdullah Shoaib; Choonkil Park; Manuel de la Sen; Hassen Aydi 002; Jung Rye Lee (Complex., 2020)

Labor-management negotiation conflict analysis based on soft preference relation. - Muhammad Uzair Khan; Abbas Ali; Noor Rehman; Saleem Abdullah; Naim Çagman; Dong Yun Shin; Choonkil Park (J. Intell. Fuzzy Syst., 2020)

A fixed point approach to approximate quadratic functional equation in non-Archimedean L*-fuzzy normed spaces. - Javad Shokri; Choonkil Park (J. Intell. Fuzzy Syst., 2020)

On New Extensions of Darbo's Fixed Point Theorem with Applications. - Hüseyin Isik; Shahram Banaei; Farhan Golkarmanesh; Vahid Parvaneh; Choonkil Park; Maryam Khorshidi (Symmetry, 2020)

Oscillation criteria for a class of even-order neutral delay differential equations. - Osama Moaaz; Choonkil Park; Ali Muhib; Omar Bazighifan (J. Appl. Math. Comput., 2020)

Neutrosophic Rayleigh Model With Some Basic Characteristics and Engineering Applications. - Zahid Khan; Muhammad Gulistan; Nasreen Kausar; Choonkil Park (IEEE Access, 2021)

Convexity property and fixed-point theorems in CΩ-modular space. - Sarem H. Hadi; Zainab S. Madhi; Choonkil Park (J. Intell. Fuzzy Syst., 2021)

Evaluation of the product quality of the online shopping platform using t-spherical fuzzy preference relations. - Choonkil Park; Shahzaib Ashraf; Noor Rehman; Saleem Abdullah; Muhammad Aslam 003 (J. Intell. Fuzzy Syst., 2021)

Fuzzy double controlled metric spaces and related results. - Naeem Saleem; Hüseyin Isik; Salman Furqan; Choonkil Park (J. Intell. Fuzzy Syst., 2021)

A new approach to vague soft toplogical structures concerning soft points. - Arif Mehmood; Samer Al Ghour; Saleem Abdullah; Choonkil Park; Jung Rye Lee (J. Intell. Fuzzy Syst., 2022)

New proximal type algorithms for convex minimization and its application to image deblurring. - Suparat Kesornprom; Prasit Cholamjiak; Choonkil Park (Comput. Appl. Math., 2022)

A new fifth-order iterative method free from second derivative for solving nonlinear equations. - Noori Yasir Abdul-Hassan; Ali Hasan Ali; Choonkil Park (J. Appl. Math. Comput., 2022)

Stability of Some Advanced Functional Equations in Various Spaces - Hemen Dutta; Vediyappan Govindan; Choonkil Park; R. Vadivel (Springer, 2023)

Addressing an open problem of Choudhury et al. "Fuzzy Sets Syst. 8 (2013), 84-97". - Manish Jain; Sanjay Kumar; Choonkil Park (J. Intell. Fuzzy Syst., 2023)

Another view on tolerance based multigranulation q-rung orthopair fuzzy rough sets with applications. - Choonkil Park; Noor Rehman; Abbas Ali (J. Intell. Fuzzy Syst., 2023)

A new class of fuzzy implications derived from non associative structures and its characterizations. - Choonkil Park; Noor Rehman; Abbas Ali; Reham A. Alahmadi; Mohammed M. Khalaf; Kostaq Hila (J. Intell. Fuzzy Syst., 2023)

Disease categorization with clinical data using optimized bat algorithm and fuzzy value. - K. M. Naresh Patel; K. Ashoka; Choonkil Park; M. C. Shanmukha; Muhammad Azeem 002 (J. Intell. Fuzzy Syst., 2023)

Some stabilities of system of differential equations using Laplace transform. - Yamin Sayyari; Mehdi Dehghanian; Choonkil Park (J. Appl. Math. Comput., 2023)

Common fixed point theorems in intuitionistic fuzzy metric spaces with an application for Volterra integral equations. - Leila Ben Aoua; Vahid Parvaneh; Taki-Eddine Oussaeif; Liliana Guran; Ghemam Hamed Laid; Choonkil Park (Commun. Nonlinear Sci. Numer. Simul., 2023)

Some Orders in Groupoids and Its Applications to Fuzzy Groupoids. - Akbar Rezaei; Choonkil Park; Hee Sik Kim (TFSS, 2025)