Welcome to HPMug2oMmNrOfxWQHLiEksa6s0hFu9Ox348d7QefarYlaFR5ArkhOwm3Da1pmxmxCtenj1+6luWD#r#n+EPn9L6Ce+9onqnMlT+i! Today is
ＯｎＣｏｎｄｉｔｉｏｎｓｏｆＣｏｎｓｔｒａｉｎｅｄＥｘｔｒｅｍｕｍ Ｐｒｏｂｌｅｍｓ
WANG 　Yue-１, YANG 　Jiao-１, WANG Zhi-Yong-２
HPMug2oMmNrOfxWQHLiEksa6s0hFu9Ox348d7QefarYlaFR5ArkhOwm3Da1pmxmxCtenj1+6luWD#r#n+EPn9L6Ce+9onqnMlT+i . 2011, (3): 84 -87 .  DOI: 10.3969/j.issn.1009-0479.2011.03.021