%0 Journal Article %A A. N. Golubyatnikov %A S. I. Plotnikov %T On the separation of energy from mass in inhomogeneous discrete %J Doklady Akademii Nauk %D 1989 %P 559-562 %V 309 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_309_3_a9/ %G ru %F DAN_1989_309_3_a9