@article{RM_1960_15_6_a5,
     author = {A. M. Zverkin and G. A. Kamenskii and S. B. Norkin},
     title = {On the formulation of initial conditions for differential equations with advanced argument},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {15},
     number = {6},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1960_15_6_a5/}
}