Distance Learning Course on Business on the Internet: Some Implementation Issues. - Krassen Stefanov; Boian Lomev; Sergei Varbanov; Roumen Nikolov (Teleteaching, 1998)

User Interfaces for a Virtual Learning Environment: Two Study Cases. - Krassen Stefanov; Darina Dicheva; Roumen Nikolov; Ivanka Djakova (Educ. Inf. Technol., 1998)

Design issues of a distance learning course on Business on the Internet. - Krassen Stefanov; Svetoslav Stoyanov; Roumen Nikolov (J. Comput. Assist. Learn., 1998)

Computing ontology creation. - Krassen Stefanov (CompSysTech, 2003)

Distance education standards and legal issues - computing education perspective. - Larisa Vladinova; Alexander Minchev; Krassen Stefanov (CompSysTech, 2003)

Services for Knowledge Resource Sharing & Management in an Open Source Infrastructure for Lifelong Competence Development. - Elena Demidova; Philipp Kärger; Daniel Olmedilla; Stefaan Ternier; Erik Duval; Michele Dicerto; Carlos Mendez; Krassen Stefanov (ICALT, 2007)

Learning networks for lifelong competence development. - Krassen Stefanov; Rob Koper (Interact. Learn. Environ., 2007)

Supporting life-long competence development using the TENCompetence infrastructure: a first experiment. - Judith Schoonenboom; Henk Sligte; Ayman Moghnieh; Davinia Hernández Leo; Krassen Stefanov; Christian Glahn; Marcus Specht; Ruud Lemmers (Int. J. Emerg. Technol. Learn., 2008)

Turning university professors into competent learners. - Krassen Stefanov; Nikolina Nikolova; Miroslava Ilieva; Eliza Stefanova (Int. J. Emerg. Technol. Learn., 2008)

weSPOT: A Cloud-based Approach for Personal and Social Inquiry. - Alexander Mikroyannidis; Alexandra Okada; Peter Scott; Ellen Rusman; Marcus Specht; Krassen Stefanov; Aristos Protopsaltis; Paul Held; Sónia Hetzner (WCLOUD, 2012)

weSPOT: A Personal and Social Approach to Inquiry-Based Learning. - Alexander Mikroyannidis; Alexandra Okada; Peter Scott; Ellen Rusman; Marcus Specht; Krassen Stefanov; Pavel Boytchev; Aristidis Protopsaltis; Paul Held; Sónia Hetzner; Kathy Kikis-Papadakis; Foteini Chaimala (J. Univers. Comput. Sci., 2013)

The Virtual Classroom - A Pilot Case in Inquiry Based Learning. - Pavel Boytchev; Eliza Stefanova; Nikolina Nikolova; Krassen Stefanov (CSEDU (2), 2014)

What Serious Game Studios Want from ICT Research: Identifying Developers' Needs. - Grigorij Ljubin Saveski; Wim Westera; Li Yuan; Paul A. Hollins; Baltasar Fernández-Manjón; Pablo Moreno-Ger; Krassen Stefanov (GALA, 2015)

Integrated education in e-learning design and development through synchronised assignments and assessments of courses. - Pencho Mihnev; Krassen Stefanov; Eliza Stefanova (CompSysTech, 2016)

The RAGE Advanced Game Technologies Repository for Supporting Applied Game Development. - Atanas Georgiev; Alexander Grigorov; Boyan Bontchev; Pavel Boytchev; Krassen Stefanov; Wim Westera; Rui Prada; Paul A. Hollins; Pablo Moreno-Ger (GALA, 2016)

The RAGE Software Asset Model and Metadata Model. - Atanas Georgiev; Alexander Grigorov; Boyan Bontchev; Pavel Boytchev; Krassen Stefanov; Kiavash Bahreini; Enkhbold Nyamsuren; Wim van der Vegt; Wim Westera; Rui Prada; Paul A. Hollins; Pablo Moreno-Ger (JCSG, 2016)

e-Analytics for e-Learning. - Dafinka Miteva; Krassen Stefanov; Eliza Stefanova (Int. J. Hum. Cap. Inf. Technol. Prof., 2017)

The RAGE Game Software Components Repository for Supporting Applied Game Development. - Krassen Stefanov; Atanas Georgiev; Alexander Grigorov; Boyan Bontchev; Pavel Boytchev; Wim Westera; Rui Prada; Paul A. Hollins; Pablo Moreno-Ger; Enkhbold Nyamsuren; Kiavash Bahreini (Int. J. Serious Games, 2017)

STEM Teachers' Competence Development: When Opportunities Jump over Barriers. - Nikolina Nikolova; Eliza Stefanova; Krassen Stefanov; Pencho Mihnev (CSEDU (1), 2018)

The RAGE Software Portal: Toward a Serious Game Technologies Marketplace. - Wim Westera; Baltasar Fernández-Manjón; Rui Prada; Kam Star; Andrea Molinari; Dominic Heutelbeck; Paul A. Hollins; Rubén Riestra; Krassen Stefanov; Eric Kluijfhout (GALA, 2018)

Opportunities and Challenges for Efficient and Effective STEM Teachers' Competence Development. - Nikolina Nikolova; Eliza Stefanova; Pencho Mihnev; Krassen Stefanov (WorldCIST (2), 2018)

Digitization Era for Electric Utilities: A Novel Business Model Through an Inter-Disciplinary S/W Platform and Open Research Challenges. - Prodromos Makris; Nikolaos Efthymiopoulos; Vassilis Nikolopoulos; Andrew Pomazanskyi; Boris Irmscher; Krassen Stefanov; Katina Pancheva; Emmanouel A. Varvarigos (IEEE Access, 2018)

Inclusive Education Course Design for Informatics Teachers. - Temenuzhka Zafirova-Malcheva; Pavel Boytchev; Eliza Stefanova; Pencho Mihnev; Krassen Stefanov (BCI, 2019)

Designing a Competence-Based Learning Course with Digital Tools in Higher Education. - Pencho Mihnev; Albena Antonova; Atanas Georgiev; Krassen Stefanov; Eliza Stefanova; Nikolina Nikolova (WorldCIST (3), 2021)

Data Spaces for Cultural Heritage: Insights from GLAM Innovation Labs. - Milena Dobreva; Krassen Stefanov; Krassimira Ivanova (ICADL, 2022)

Professional Accreditation and Competency-Based Computing Education. - Rajendra K. Raj; John Impagliazzo; Sherif G. Aly 001; David S. Bowers; Harold S. Connamacher; Stan Kurkovsky; Bonnie K. MacKellar; Tom Prickett; Maíra Marques Samary; Krassen Stefanov (ITiCSE (2), 2022)

Software Systems and Frameworks for Competency-Based Learning. - Krassen Stefanov (Computer, 2022)