%0 Journal Article %A G. A. Grigoryan %T Two comparison criteria for scalar Riccati equations and their applications %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2012 %P 20-35 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2012_11_a1/ %G ru %F IVM_2012_11_a1