@article{ZNSL_1996_232_a11,
     author = {A. I. Sergeyev},
     title = {Uniqueness and normality for {M.~Riesz} potentials and solutions of the {Darboux} equation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {141--147},
     year = {1996},
     volume = {232},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1996_232_a11/}
}