@article{DE_1970_6_7_a26,
     author = {A. S. Fokht},
     title = {An integral estimate of the derivatives of a harmonic function of an $N$-dimensional region in the $L_p$ metric, and some 
},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1329--1332},
     publisher = {mathdoc},
     volume = {6},
     number = {7},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_7_a26/}
}