In memory of a friend
A. I. Nijnikov, V. N. Chubarikov, A. R. Esayan, N. M. Dobrovol'skii

References
1.	Vagramenko J. A., “Electronic information environment for education”, Pedagogy, 1994, no. 3, 28–31
2.	J. A. Vagramenko, B. I. Zobov, A. P. Osipov, “Pedagogical virtual University: the main objectives, principles, structure information resources”, Pedagogical Informatics, 2002, no. 1, 18–25
3.	J. A. Vagramenko, “Information as the direction of the development of education”, Modern problems of teaching mathematics and Informatics, Proceedings of the international. science Conf. dedicated to the 100th anniversary of academician S. M. Nikolsky. Section “Problems of teaching science in high and secondary schools” (Moscow, may 4–8, 2005), M., 2005