@article{KUKTF_1979_a1,
     author = {L. P. Gaifullina},
     title = {An optimal method for solving equations of elliptic type},
     journal = {Konstruktivnaya Teoriya Funktsii i Funktsional'nyi Analiz},
     pages = {21--26},
     publisher = {mathdoc},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKTF_1979_a1/}
}