Mehraban, Z.,
Heidarkhani, S., &
Tersian, S.
(2019).
A variational approach to impulsive sturm-liouville differential equations with nonlinear derivative dependence. // <I>Intern. j.<D> of Appl. math., 32, 2019, № 5, p. 805-828, Art. № 08, DOI: 10.12732/ijam.v32i5.8.. (4432),