A visual language for algorithm knowledge representation. - Irina Zheliazkova; Galina Atanasova (CompSysTech, 2004)

Modeling teaching and learning environments. - Irina Zheliazkova; Rumen Kolev (CompSysTech, 2004)

A three-level learner's model for the needs of an integrated environment for individual planned teaching. - Irina Zheliazkova; Rumen Kolev (CompSysTech, 2004)

An interactive tool based on priority semantic networks. - Milko T. Marinov; Irina Zheliazkova (Knowl. Based Syst., 2005)

Task results processing for the needs of task-oriented design environments. - Irina Zheliazkova; Rumen Kolev (Comput. Educ., 2008)