1. Review of load-flow calculation methods;Stott,1974
2. Load flow convergence in the vicinity of a voltage stability limit;Abe;IEEE Trans.,1978
3. On the question of the uniqueness of stable load flow solutions;Korsak;IEEE Trans.,1972
4. Non-uniqueness and stability of load flow;Klos,1978
5. Extraneous and false load flow solutions;Johnson;IEEE Trans.,1977