A Publicly Available Cross-Platform Lemmatizer for Bulgarian. - Grigor Iliev; Nadezhda Borisova; Elena Karashtranova; Dafina Kostadinova (CoRR, 2015)

A Conceptual Design of Mobile Learning Applications for Preschool Children. - Radoslava Kraleva; Velin Kralev; Dafina Kostadinova (CoRR, 2016)

Investigating the opportunities of using mobile learning by young children in Bulgaria. - Radoslava Kraleva; Aleksandar Stoimenovski; Dafina Kostadinova; Velin Kralev (CoRR, 2016)

A Methodology for the Analysis of Block-Based Programming Languages Appropriate for Children. - Radoslava Kraleva; Velin Kralev; Dafina Kostadinova (J. Comput. Sci. Eng., 2019)