8Gary R. Smith, Caryn M. Bohn. Small to Medium Contractor Contingency and Assumption of Risk [J]. Journal of Construction Engineering and Management, 1999, 125(2).
9Bitsch V,Harsh S. B, Mugera A. W. Risk in Human Resource Management and Implications for Extension Programming[J]. American Agricultural Economics Association Annual Meeting, Montreal, Canada, 2003(7).
