@article{SM_2005_196_8_a3,
     author = {K. I. Chernyshov},
     title = {Cauchy operator of a~non-stationary linear differential equation with a~small parameter at the derivative},
     journal = {Sbornik. Mathematics},
     pages = {1165--1208},
     year = {2005},
     volume = {196},
     number = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2005_196_8_a3/}
}