Harutunyan TN, Sahakyan GH. THE EXISTENCE OF THE EIGENVALUES FOR DIRAC’S TWO- PARAMETER BOUNDARY-VALUE PROBLEM. Proc. YSU A: Phys. Math. Sci. [Internet]. 2006 May 30 [cited 2024 Sep. 20];40(2 (210):25-40. Available from: https://pub.ysu.am/index.php/proceedings-phys-math/article/view/vol40_no2_2006_pp025-040