학위논문(석사) - 한국과학기술원 : 경영공학전공, 2005.2, [ v, 69 p. ]
콕스; 진입 퇴출; 기술기회; 전유성; 기업 생존; 모델; cox proportional model; entry exit; opportunity; technological; appropriability; Firm survial
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