On transferring of traditional learning materials into virtual learning environment. - Iliana Chakarova; George Totkov (CompSysTech, 2003)

Virtual learning environments: towards new generation. - George Totkov (CompSysTech, 2003)

About the standardization and the interoperability of e-learning resources. - George Totkov; Cvetelina Krusteva; Nikolay Baltadzhiev (CompSysTech, 2004)

Modelling of e-learning processes: an approach used in Plovdiv e-university. - George Totkov; Elena Somova; Mariana Sokolova (CompSysTech, 2004)

Experimental software solution for e-projects and e-documents management. - Daniel Denev; Georgy Totkov; Rositsa Doneva; Nikolay Kasakliev (CompSysTech, 2007)

Accumulative question types in e-learning environment. - Mariana Sokolova; Georgy Totkov (CompSysTech, 2007)

A software system for speech therapy and voice quality improvement. - Vania Sivakova; Todorka Terzieva; George Totkov (CompSysTech, 2008)

Extended IMS specification for accumulative test system. - Mariana Sokolova; Georgy Totkov (CompSysTech, 2008)

e-learning standardization – Bulgaria: current status, issues and a possible solution. - Georgy Totkov; Todor Uzunov; Rositsa Doneva; Nikolay Kasakliev (CompSysTech, 2008)

European standardization: mobility without borders. - Rositsa Doneva; George Totkov; Nikolay Kasakliev; Elena Somova (CompSysTech, 2009)

Executable Petri Nets: towards modelling and management of e-learning processes. - Hristo Indzhov; Dimitar Blagoev; George Totkov (CompSysTech, 2009)

LOGOPED 2.0: software system for e-consulting and therapy of people with communicative disorders. - Vania Sivakova; George Totkov; Todorka Terzieva (CompSysTech, 2009)

A software frame for modelling and runtime control of adaptive testing. - Hristo Indzhov; Mariana Sokolova; George Totkov (CompSysTech, 2010)

Automated evaluation of speech for electronic therapy of people with communicative disorders. - Vania Sivakova; George Totkov (CompSysTech, 2010)

E = MA2 (e-learning in a Moodle-based adaptive and accumulative system). - Hristo Indzhov; George Totkov; Rositsa Doneva (CompSysTech, 2011)

Adaptive test system based on revised Bloom's taxonomy. - Mariana Raykova 002; Hristina Kostadinova; George Totkov (CompSysTech, 2011)

Phonetic database for automated generating of logopedic exercises. - Vania Sivakova; George Totkov; Dimitar Blagoev (CompSysTech, 2011)

Adaptive e-learning system based on accumulative digital activities in revised Bloom's taxonomy. - Hristina Kostadinova; George Totkov; Hristo Indzhov (CompSysTech, 2012)

Supporting adaptive e-Learning: an approach based on open-source learning management systems. - Hristo Indzhov; Polina Zhelyazkova; George Totkov (CompSysTech, 2013)

Automatized test item generation in moodle. - Mariana Raykova 002; Hristina Kostadinova; George Totkov (CompSysTech, 2014)

Personalized Educational Paths through Self-Modifying Learning Objects. - George Pashev; George Totkov; Hristina Kostadinova; Hristo Indzhov (CompSysTech, 2016)

Implementing Semantic Search in Decision Support System. - Mariya Zhekova; George Pashev; George Totkov (ERIS, 2021)

Automated Extraction of Values of Quantitative Indicators to a Quality Evaluation System Using Natural Language Analysis Tools. - Mariya Zhekova; George Pashev; George Totkov; Silvia Gaftandzhieva (ERIS, 2021)

Automatized SWOT Analysis of the Quality Level in Higher Education Institutions. - Hristina Kostadinova; George Totkov; Stoyan Atanasov (ERIS, 2022)

An Algorithm for Translation of a Natural Language Question into SQL Query. - Mariya Zhekova; George Pashev; George Totkov (ERIS, 2022)