@article{DE_1997_33_2_a8,
     author = {L. B. Knyazhishche and N. A. Shawel},
     title = {Nonmonotone {Lyapunov} functionals and estimates for solutions of differential equations with delay},
     journal = {Differencialʹnye uravneni\^a},
     pages = {205--211},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_2_a8/}
}