@article{UZMU_1956_181_181_a9,
     author = {P. L. Ul'yanov},
     title = {The $A$-integral and conjugate functions},
     journal = {Uchenye Zapiski Moskovskogo Gosudarstvennogo Universiteta},
     pages = {139--157},
     publisher = {mathdoc},
     volume = {181},
     number = {181},
     year = {1956},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZMU_1956_181_181_a9/}
}