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61
Hee-Chang Eun, Sang-Yeol Park, Eun-Taik Lee, Heon, | 대한기계학회 | 2004 ,
62
Hee-Chang Eun,Keun-Hyuk Yang,Heon-Soo Chung, | 대한기계학회 | 2003 ,
63
Hee-Chang Eun,Keun-Heok Yang,Heon-Soo Chung, | 대한기계학회 | 2002 ,
64