Dicheva, Darina
Monografia (1997) Human computer interaction and educational tools : HCI–ET : proceedings of the IFIP WG 3.3 Working Conference : Sozopol, Bulgaria May 27th–28th 1997
Monografia (1997) PEG'97 : meeting the challenge of the new technologies : proceedings of the eight International PEG Conference : Sozopol, Bulgaria May 30th – June 1st 1997