1. Dynamical hierarchical control;Singh,1977
2. An introduction to hierarchical systems theory;Smith;Comput. Elect. Engng,1973
3. The optimisation of non-linear systems using a new two level method;Hassan;Automatica,1976
4. Multi-level control and optimisation using generalised gradients technique;Mahmoud;IJC,1977
5. A two level costate prediction algorithm for non-linear systems;Hassan,1976