%0 Journal Article %A È. M. Brainina %A R. Kh. Freidlina %A A. N. Nesmeyanov %T Cyclopentadienyl compounds of zirconium containing $\mathrm{Zr}$ -- $\mathrm{O}$ -- $\mathrm{Zr}$-group %J Doklady Akademii Nauk %D 1964 %P 1113-1115 %V 154 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_154_5_a22/ %G ru %F DAN_1964_154_5_a22