@article{VTAMU_2021_26_136_a4,
     author = {S. M. Labovski},
     title = {On a necessary and sufficient condition for the negativeness of the {Green{\textquoteright}s} function of a two-point boundary value problem for a functional differential equation},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {382--393},
     publisher = {mathdoc},
     volume = {26},
     number = {136},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2021_26_136_a4/}
}