TY - JOUR AU - Saboormaleki, M. TI - On the spectrum of non-selfadjoint differential operators. JO - International Journal of Open Problems in Computer Science and Mathematics. IJOPCM PY - 2008 SP - 240 VL - 1 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IJOPCM_2008__1_3_228476/ LA - en ID - IJOPCM_2008__1_3_228476 ER -