1. Optimal control for a suspended travelling load;Anselmino,1967
2. Closed-loop timeoptimal control of a suspended load: a design study;Beeston,1969
3. Discontinuous Automatic Control;Flügge-Lotz,1953
4. Application of piecewise-continuous dynamic systems to filtering problems;Golembo;Autom. and Remote Control,1976
5. Automatic control of crane operations;Hazlerigg,1972