1. Dividing load between units;Davison;Electl Wld,1922
2. Dividing load economically among power plant;Wilston;A.I.E.E. Jl,1928
3. Load division in interconnections;Stahl;Electl Wld,1930
4. Economical load allocation;Estrada;Electl Wld,1930
5. Load division by the increment method;Hahn;Power,1931