@article{MT_2011_14_1_a3,
     author = {V. V. Karachik and B. K. Turmetov and B. T. Torebek},
     title = {On some integro-differential operators in the class of harmonic functions and their applications},
     journal = {Matemati\v{c}eskie trudy},
     pages = {99--125},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2011_14_1_a3/}
}