HARUTUNYAN, T. N.; SAHAKYAN, G. H. ON A SPECTRAL PROBLEM FOR A SYSTEM OF PARTIAL DIFFERENTIAL EQUATIONS. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 39, n. 3 (208), p. 40–46, 2005. DOI: 10.46991/PYSU:A/2005.39.3.040. Disponível em: https://pub.ysu.am/index.php/proceedings-phys-math/article/view/vol39_no3_2005_pp040-046. Acesso em: 23 nov. 2024.