@article{ZNSL_1973_34_a1,
     author = {V. M. Babich and N. S. Grigor'ev},
     title = {Uniform asymptotic expansions of functions, connected with compressed spheroid},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {6--22},
     year = {1973},
     volume = {34},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1973_34_a1/}
}