@article{01441605,
title = {Asymptotic representations for solutions of bisingular problems.},
journal = {Memoirs on Differential Equations and Mathematical Physics},
volume = {17},
year = {1999},
pages = {51-159},
zbl = {0960.35041},
language = {en},
url = {http://dml.mathdoc.fr/item/01441605}
}
Sushko, Valeri G. Asymptotic representations for solutions of bisingular problems.. Memoirs on Differential Equations and Mathematical Physics, Tome 17 (1999) pp. 51-159. http://gdmltest.u-ga.fr/item/01441605/