1. A hierarchy of safety and health program elements;Decker;Professional Safety,1984
2. A safety climate measure for construction sites;Dedobbeleer;Journal of Safety Research,1991
3. Safety practices in construction industry;Dedobbeleer;Professional Safety,1989
4. Safety Management. Improving Performance;Denton,1982
5. A quantitative and qualitative measurement of industrial safety activities;Diekemper;ASSE Journal,1970