Some Considerations in the Design of Long Span Bridges against ProgressiveCollapse (pdf). HNTB Corporation: 1, 6, 14. [2010-12-25]. (原始内容存档 (PDF)于2011-04-09)
(Austin: University of Texas Press, 1987). Marshall, Thurgood. "The Rise and Collapse of the 'White Democratic Primary" The Journal of Negro Education, Vol.