@article{DE_1971_7_12_a22,
     author = {Kh. Yu. Kurdanov},
     title = {An upper estimate for the solutions of a nonlinear first order equation of lagging type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2283--2284},
     publisher = {mathdoc},
     volume = {7},
     number = {12},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_12_a22/}
}