@article{ZNSL_2011_390_a7,
     author = {P. B. Zatitskiy and F. V. Petrov},
     title = {Correction of metrics},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {201--209},
     publisher = {mathdoc},
     volume = {390},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2011_390_a7/}
}