TY - JOUR AU - Cemil Tunç TI - Nonexistence of Nontrivial Periodic Solutions to a Class of Nonlinear Differential Equations of Eighth Order JO - Bulletin of the Malaysian Mathematical Society PY - 2009 VL - 32 IS - 3 UR - http://geodesic.mathdoc.fr/item/BMMS_2009_32_3_a3/ ID - BMMS_2009_32_3_a3 ER -