¼­¿ï´ë ÀÛ¿ë¼Ò ¼¼¹Ì³ª 2004 Dec 3: ÀÌÀüÀÍ(»ó¸í´ë); Spectral properties of operator classes including p-hyponormal operator 2005 Nov 25: ÀÌÀüÀÍ(»ó¸í´ë); Spectral properties of p-hyponormal operators 2006 Apr 7: ÀÌÀüÀÍ(»ó¸í´ë); On the projective property of some operators