Department of Physics and Astronomy;
Shumen University;
115 Universitetska str.;
9700 Shumen;
Bulgaria;
Via Zoncada 51;
26845 Codogno(LO);
Italy;
Via Molinetto 35;
26845 Triulza di Codogno(LO);
Italy;
techinques:photometric; binaries:eclipsing; stars:fundamental parameters; stars:individual;