%0 Journal Article %A L. A. Leites %A T. K. Gar %A V. F. Mironov %T Manifestation of the $\sigma$, $\pi$-conjugation in the spectra of $\beta$-alkenylgermanes, as dependent on steric factors %J Doklady Akademii Nauk %D 1964 %P 400-403 %V 158 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_158_2_a29/ %G ru %F DAN_1964_158_2_a29