Geodesic
The Condition of N.\,P.~Kuptsov $s$-regularity
Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, Tome 13 (2013) no. 1, pp. 84-87.

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We investigate the condition of $s$-regularity for the operator $Qy =-y'' (x)+x ^ 2y (x)$ in the spaces $L^{p}{(-\infty,\infty)}$. 
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V. P. Sklyarov. The Condition of N.\,P.~Kuptsov $s$-regularity. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, Tome 13 (2013) no. 1, pp. 84-87. http://geodesic.mathdoc.fr/item/ISU_2013_13_1_a20/

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