@article{ZNSL_1974_44_a8,
     author = {Din' Van F'eu},
     title = {On an extension of the {Goluzin} variational formula to annulus},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {131--178},
     publisher = {mathdoc},
     volume = {44},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1974_44_a8/}
}