%0 Journal Article %A E. V. Burtsev %A S. P. Chervonobrodov %T On the calculation of crystal nucleus energy at the interphase in a polar medium (exemplified by the $180^\circ$ domain boundary in ferroelectrics) %J Doklady Akademii Nauk %D 1986 %P 828-831 %V 291 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1986_291_4_a12/ %G ru %F DAN_1986_291_4_a12