@article{ZNSL_1983_129_a1,
     author = {A. B. Venkov},
     title = {On accessory coefficients of second order {Fuchsian} equation with real singular points},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {17--29},
     publisher = {mathdoc},
     volume = {129},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1983_129_a1/}
}