%0 Journal Article %A E. I. Rozum %A S. A. Vorob'ev %A V. V. Kaplin %T Observation of quasi-molecular X-ray radiation under channelling of $5,7$ MeV electrons in $\langle110\rangle$ $\mathrm{Si}$ crystal %J Doklady Akademii Nauk %D 1990 %P 861-865 %V 310 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_310_4_a21/ %G ru %F DAN_1990_310_4_a21