| From CBT to e-Learning S Stoyanov, I Ganchev, I Popchev, M O’droma Journal Information Technologies and Control 3 (4), 2-10, 2005 | 93 | 2005 |
| Properties of the aggregation operators related with fuzzy relations V Peneva, I Popchev Fuzzy Sets and Systems 139 (3), 615-633, 2003 | 83 | 2003 |
| DeLC educational portal S Stoyanov, I Popchev, E Doychev, D Mitev, V Valkanov, ... Cybernetics and Information Technologies 10 (3), 49-69, 2010 | 73 | 2010 |
| Towards big data analytics in the e-learning space IP Popchev, DA Orozova Cybernetics and information technologies 19 (3), 16-24, 2019 | 64 | 2019 |
| An Approach for the Development of InfoStation-Based eLearning Architectures S Stoyanov, I Ganchev, I Popchev, M O’Droma Compt. Rend. Acad. Bulg. Sci 61 (9), 1189-1196, 2008 | 57 | 2008 |
| Comparison of clusters from fuzzy numbers V Peneva, I Popchev Fuzzy Sets and Systems 97 (1), 75-81, 1998 | 57 | 1998 |
| Automatic generation of test questions by software agents using ontologies NS Stancheva, I Popchev, A Stoyanova-Doycheva, S Stoyanov 2016 IEEE 8th International Conference on Intelligent Systems (IS), 741-746, 2016 | 39 | 2016 |
| Aggregation of fuzzy preference relations to multicriteria decision making V Peneva, I Popchev Fuzzy Optimization and Decision Making 6 (4), 351-365, 2007 | 38 | 2007 |
| DeLC-distributed eLearning center S Stojanov, I Ganchev, I Popchev, M O’Droma, R Venkov Proc. of the 1st Balkan Conference on Informatics BCI, 327-336, 2003 | 34 | 2003 |
| A model for generation of test questions N Stancheva, A Stoyanova-Doycheva, S Stoyanov, I Popchev, V Ivanova Comptes rendus de l’Academie bulgare des Sciences 70 (5), 619-630, 2017 | 31 | 2017 |
| Fuzzy multi-criteria decision making algorithms V Peneva, I Popchev Compt. Rend. Acad. Bulg. Sci 63 (7), 979-992, 2010 | 30 | 2010 |
| Blockchain software selection as a fuzzy multi-criteria problem G Ilieva, T Yankova, I Radeva, I Popchev Computers 10 (10), 120, 2021 | 29 | 2021 |
| Towards a multistep method for assessment in e-learning of emerging technologies IP Popchev, DA Orozova Cybernetics and Information technologies 20 (3), 116-129, 2020 | 29 | 2020 |
| Internet of things water monitoring for a smart seaside city S Stoyanov, D Orozova, I Popchev 2018 20th International Symposium on Electrical Apparatus and Technologies …, 2018 | 28 | 2018 |
| Learning intelligent system for student assistance-LISSA J Todorov, S Stoyanov, V Valkanov, B Daskalov, I Popchev 2016 IEEE 8th international conference on intelligent systems (IS), 753-757, 2016 | 28 | 2016 |
| Multicriteria decision making based on fuzzy relations V Peneva, I Popchev Cybernetics and Information Technologies 8 (4), 3-12, 2008 | 28 | 2008 |
| Personal assistants in a virtual education space J Todorov, V Valkanov, S Stoyanov, B Daskalov, I Popchev, D Orozova Practical issues of intelligent innovations, 131-153, 2018 | 27 | 2018 |
| Evolutionary Development of an Infrastructure Supporting the Transition from CBT to e-Learning S Stoyanov, I Popchev Cybernetics and Information Technologies 6 (2), 101-114, 2006 | 27 | 2006 |
| Intelligent distributed eLearning architecture S Stoyanov, H Zedan, E Doychev, V Valkanov, I Popchev, G Cholakov, ... Intelligent Systems, 185-218, 2012 | 26 | 2012 |
| An algorithm for comparison of fuzzy sets I Popchev, V Peneva Fuzzy sets and systems 60 (1), 59-65, 1993 | 26 | 1993 |
