TY - BOOK A1 - N. I. SHKIL,L. D. NIKOLENKO TI - ASYMPTOTIC METHODS IN THE THEORY OF LINEAR DIFFERENTIAL EQUATIONS PB - كتابخانه مركزی دانشكده نفت اهواز SN - 68626369 UR /book/68626369/ASYMPTOTIC-METHODS-IN-THE-THEORY-OF-LINEAR-DIFFERE/ ER -