@article{IVM_2010_11_a4,
     author = {T. L. Sabatulina},
     title = {Positiveness conditions for the {Cauchy} function for differential equations with distributed delay},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {50--62},
     publisher = {mathdoc},
     number = {11},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2010_11_a4/}
}