Ershkov O.P.,  Melentev L.P.,  Yakhov M. G. Raschety zheleznodorozhnogo puti v krivykh i normy ego ustroystva./Ershkov O.P.,  Melentiev L.P.,  Yakhov M.G. Calculations of the railway track in curves and the norms of its design. In Russian - landofmagazines.com

TransliterationErshkov O.P., Melentev L.P., Yakhov M. G. Raschety zheleznodorozhnogo puti v krivykh i normy ego ustroystva.

In EnglishErshkov O.P., Melentiev L.P., Yakhov M.G. Calculations of the railway track in curves and the norms of its design. In Russian

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