Kir, E., Bascanbaz-Tunca, G. and Yanik, C. (2017) “Spectral properties of a non selfadjoint system of differential equations with a spectral parameter in the boundary condition”, Proyecciones (Antofagasta, On line), 24(1), pp. 49-63. doi: 10.4067/10.4067/S0716-09172005000100005.