Applied Mathematics 7 (2015)
���Ȼ���/14
¤ÎźÉÕ¥Õ¥¡¥¤¥ë°ìÍ÷
źÉÕ¥Õ¥¡¥¤¥ë¤¬¤¢¤ê¤Þ¤»¤ó¡£