%0 Journal Article %A O. N. Mikhailov %A R. A. Sharipov %T The geometry of point extensions of a class of second-order differential equations %J Differencialʹnye uravneniâ %D 2000 %P 1331-1335 %V 36 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2000_36_10_a5/ %G ru %F DE_2000_36_10_a5