The Scaling of Digital Differential Analyzers. - Harold K. Knudsen (IEEE Trans. Electron. Comput., 1965)

The theory of amorphous cloud trajectory prediction. - Fred C. Schweppe; Harold K. Knudsen (IEEE Trans. Inf. Theory, 1968)

Periodic optimization with applications to solar energy control. - Peter Dorato; Harold K. Knudsen (Autom., 1979)