@article{VSGTU_2013_4_a1,
     author = {Zh. Tasmambetov},
     title = {On irregular singular curves of {Whittaker} type systems},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {25--33},
     publisher = {mathdoc},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2013_4_a1/}
}