@article{VSGU_2018_24_3_a5,
     author = {A. A. Cherepanov},
     title = {PhaPl web application for automatic building and research of phase portraits on plane},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {41--52},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2018_24_3_a5/}
}