MURATBEKOV, M.B.; MURATBEKOV, M.M. On the bounded invertibility of a Schrödinger operator with a negative parameter in the space L2(Rn ). Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 93, n. 1, p. 36–47, 2019. DOI: 10.31489/2019m1/36-47. Disponível em: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/258. Acesso em: 4 sep. 2025.