Sarud Udomchalermpat. (2010) Stability and hopf bifurcation of delayed population models and applications /. King Mongkut's University of Technology North Bangkok,:ม.ป.ท.Sarud Udomchalermpat. 2010. Stability and hopf bifurcation of delayed population models and applications /. ม.ป.ท.:King Mongkut's University of Technology North Bangkok,;Sarud Udomchalermpat. Stability and hopf bifurcation of delayed population models and applications /. ม.ป.ท.:King Mongkut's University of Technology North Bangkok, 2010. Print.