Iterative method for solving singular spectral problems for second-order differential equations
2017 ◽
Vol 41
(3)
◽
pp. 113-121
2018 ◽
Vol 57
(4)
◽
pp. 2515-2520
◽
2011 ◽
Vol 57
(2)
◽
pp. 409-416
2015 ◽
Vol 36
(7)
◽
pp. 930-941
1972 ◽
Vol s2-5
(3)
◽
pp. 465-468
◽