@article{SM_2020_211_11_a6,
     author = {A. M. Savchuk and A. A. Shkalikov},
     title = {Asymptotic analysis of solutions of ordinary differential equations with distribution coefficients},
     journal = {Sbornik. Mathematics},
     pages = {1623--1659},
     year = {2020},
     volume = {211},
     number = {11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2020_211_11_a6/}
}