(1991). Sturm-Liouville and Dirac operators / by B.M. Levitan, I.S. Sargsjan ; [translated from the Russian by Oleg Efimov].
Cita Chicago Style (17a ed.)Sturm-Liouville and Dirac Operators / by B.M. Levitan, I.S. Sargsjan ; [translated from the Russian by Oleg Efimov]. 1991.
Cita MLA (9a ed.)Sturm-Liouville and Dirac Operators / by B.M. Levitan, I.S. Sargsjan ; [translated from the Russian by Oleg Efimov]. 1991.
Precaución: Estas citas no son 100% exactas.