@article{DE_1973_9_5_a1,
     author = {R. R. Akhmerov and A. E. Rodkina},
     title = {Differential inequalities and the structure of the integral vortex of systems of functional differential equations of neutral type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {797--806},
     publisher = {mathdoc},
     volume = {9},
     number = {5},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_5_a1/}
}