@article{SM_1985_52_2_a2,
     author = {G. A. Nesenenko and Yu. N. Tyurin},
     title = {Ray asymptotics of the {Green} function for the heat equation with a~small parameter},
     journal = {Sbornik. Mathematics},
     pages = {315--329},
     year = {1985},
     volume = {52},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1985_52_2_a2/}
}