@article{DAN_1991_320_4_a13,
     author = {V. P. Khakhlyutin},
     title = {On a problem in integral geometry in the plane},
     journal = {Doklady Akademii Nauk},
     pages = {832--834},
     publisher = {mathdoc},
     volume = {320},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_320_4_a13/}
}