Stability of Solutions of Second-Order Differential-Operator
Equations
and of Their Difference Approximations
2006 ◽
Vol 6
(3)
◽
pp. 269-290
◽
Keyword(s):
Keyword(s):
1986 ◽
Vol 83
◽
pp. 29-38
◽
Basis property of a system of eigenfunctions of a second-order differential operator with involution
2019 ◽
Vol 29
(2)
◽
pp. 183-196