@article{CHEB_2017_18_2_a6,
     author = {A. R. Esayan and N. N. Dobrovolsky},
     title = {The transformation of objects in {GeoGebra}},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {129--143},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2017_18_2_a6/}
}