@article{IVM_2018_11_a6,
     author = {E. S. Zhukovskii and Kh. M. T. Tahir},
     title = {On positivity conditions for the {Cauchy} function of functional-differential equations},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {75--81},
     publisher = {mathdoc},
     number = {11},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2018_11_a6/}
}