Improved Perturbation Bounds for the Matrix Exponential. - Mihail Konstantinov; Petko Hr. Petkov; Parashkeva Gancheva; Vera Angelova; Ivan P. Popchev (WNAA, 1996)

Fuzzy Ordering on the Basis of Multicriteria Aggregation. - Vania Peneva; Ivan P. Popchev (Cybern. Syst., 1998)

Comparison of clusters from fuzzy numbers. - Vania Peneva; Ivan P. Popchev (Fuzzy Sets Syst., 1998)

Fuzzy Logic Operators in Decision-making. - Vania Peneva; Ivan P. Popchev (Cybern. Syst., 1999)

Aggregation of Fuzzy Numbers in a Decision-making Situation. - Vania Peneva; Ivan P. Popchev (Cybern. Syst., 2001)

Properties of the aggregation operators related with fuzzy relations. - Vania Peneva; Ivan P. Popchev (Fuzzy Sets Syst., 2003)

A case based reasoning approach for development of intelligent services. - Stanimir Stojanov; Ivan P. Popchev; Daniela Chaushkova; Malina Trendafilova (CompSysTech, 2004)

New upper estimates for the solution of the continuous algebraic Lyapunov equation. - Svetoslav G. Savov; Ivan P. Popchev (IEEE Trans. Autom. Control., 2004)

Aggregation of fuzzy preference relations to multicriteria decision making. - Vania Peneva; Ivan P. Popchev (Fuzzy Optim. Decis. Mak., 2007)

An ontology based CBR architecture for knowledge management in BULCHINO catalogue. - Nadezhda Govedarova; Stanimir Stoyanov; Ivan P. Popchev (CompSysTech, 2008)

A Fuzzy Approach to Solving Multicriteria Investment Problems. - Ivan P. Popchev; Penka V. Georgieva (Innovative Techniques in Instruction Technology, E-learning, E-assessment, and Education, 2008)

Agent-oriented middleware for InfoStation-based mLearning intelligent systems. - Stanimir Stojanov; Ivan Ganchev; Ivan P. Popchev; Mairtin O'Droma; Veselina Valkanova (IEEE Conf. of Intelligent Systems, 2010)

Perturbation Bounds for the Nonlinear Matrix Equation X + AHX-1A + BHX-1B = I. - Ivan P. Popchev; Petko Hr. Petkov; Mihail Konstantinov; Vera Angelova (LSSC, 2011)

Cardinality Problem in Portfolio Selection. - Penka V. Georgieva; Ivan P. Popchev (ICANNGA, 2013)

AjTempura - First Software Prototype of C3A Model. - Vladimir Valkanov; Asya Stoyanova-Doycheva; Emil Doychev; Stanimir Stoyanov; Ivan P. Popchev; Irina Radeva (IEEE Conf. on Intelligent Systems (1), 2014)

Automatic generation of test questions by software agents using ontologies. - Nina Stancheva Stancheva; Ivan P. Popchev; Asya Stoyanova-Doycheva; Stanimir Stoyanov (IEEE Conf. on Intelligent Systems, 2016)

Learning Intelligent System for Student Assistance - LISSA. - J. Todorov; Stanimir Stoyanov; Vladimir Valkanov; B. Daskalov; Ivan P. Popchev (IEEE Conf. on Intelligent Systems, 2016)

Ambient-Oriented Modelling in an Intelligent Agriculture Infrastructure. - Todorka Glushkova; Stanimir Stoyanov; Ivan P. Popchev; Lyubka Doukovska (IEEE Conf. on Intelligent Systems, 2020)

Text Mining in the Domain of Plant Genetic Resources. - Ivan P. Popchev; Daniela Orozova (IEEE Conf. on Intelligent Systems, 2020)

Decision Making Model for Disruptive Technologies in Agriculture. - Ivan P. Popchev; Irina Radeva (IEEE Conf. on Intelligent Systems, 2020)

Blockchain Software Selection as a Fuzzy Multi-Criteria Problem. - Galina Ilieva; Tania Yankova; Irina Radeva; Ivan P. Popchev (Comput., 2021)

Virtualization of Things in a Smart Agriculture Space. - Stanimir Stoyanov; Todorka Glushkova; Ivan P. Popchev; Lyubka Doukovska (Advances in Intelligent Systems Research and Innovation, 2022)

A Prototype of Blockchain/Distributed File System Platform. - Ivan P. Popchev; Lyubka Doukovska; Irina Radeva (IS, 2022)

A Model of Data Processing in Cyber-Physical Social Space Agriculture. - Ivan P. Popchev; Daniela Orozova (IS, 2022)

Algorithms for Machine Learning with Orange System. - Ivan P. Popchev; Daniela Orozova (Int. J. Online Biomed. Eng., 2023)

Framework for Evaluation of Authentication and Proof-of-Event mechanisms in Smart Contracts. - Ivan P. Popchev; Irina Radeva (IS, 2024)

Similarity Thresholds in Retrieval-Augmented Generation. - Irina Radeva; Ivan P. Popchev; Miroslava Dimitrova (IS, 2024)