1. Wiosconsin PUC to investigate transmission line failure;Electrical Week,1975
2. Cascade of tower collapses, design criteria;Frandsen,1976
3. Flexible transmission structures operate to suppress cascading failures;Lummis,1974
4. Some problems in the structural analysis of overhead electric transmission lines;Poskitt,1964
5. Unbalanced tensions in transmission lines;Campbell;J. Structural Div. ASCE,1970