@article{TM2_2007_X_1_a2,
     author = {B. Lazarov and A. Vasileva},
     title = {Nekotorye didakticheskie aspekty primeneniya professional'nyh programmnyh paketov v prepodavanii matematiki v srednei xkole i universitetah},
     journal = {The Teaching of Mathematics},
     pages = {37 },
     publisher = {mathdoc},
     volume = {X},
     number = {1},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM2_2007_X_1_a2/}
}