Geodesic
Some inequalities for second order differential operators with unbounded drift
Eurasian mathematical journal, Tome 6 (2015) no. 2, pp. 63-74.

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We study coercive estimates for some second-order degenerate and damped differential operators with unbounded coefficients. We also establish the conditions for invertibility of these operators. 
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K. N. Ospanov; R. D. Akhmetkaliyeva. Some inequalities for second order differential operators with unbounded drift. Eurasian mathematical journal, Tome 6 (2015) no. 2, pp. 63-74. http://geodesic.mathdoc.fr/item/EMJ_2015_6_2_a3/

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