@article{DE_1966_2_3_a13,
     author = {A. I. Logunov and Z. B. Tsalyuk},
     title = {Comparison theorems for {Volterra} equations with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {417--421},
     publisher = {mathdoc},
     volume = {2},
     number = {3},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1966_2_3_a13/}
}