@article{DE_1974_10_11_a0,
     author = {R. R. Akhmerov and M. I. Kamenskii and V. S. Kozyakin and A. V. Sobolev},
     title = {Periodic solutions of systems of autonomous functional-differential equations of neutral type with small lag},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1923--1931},
     publisher = {mathdoc},
     volume = {10},
     number = {11},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_11_a0/}
}