1. Theory of nonlinear control;Ku;J. Franklin Inst.,1961
2. Analysis and Control of Nonlinear Systems;Ku,1958
3. Nonlinear Problems in Random Theory;Wiener,1958
4. A theory of nonlinear systems;Bose;MIT RLE Tech. Report No. 309,1956
5. On nonlinear networks with random inputs;Ku;Trans. IRE,1960