@article{DAN_1969_186_4_a7,
     author = {I. T. Kiguradze},
     title = {The singular {Nicoletti} problem},
     journal = {Doklady Akademii Nauk},
     pages = {769--772},
     publisher = {mathdoc},
     volume = {186},
     number = {4},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_4_a7/}
}