Analysis of Sequential Machines. - D. D. Aufenkamp; Franz E. Hohn (IRE Trans. Electron. Comput., 1957)

The Theory of Nets. - Franz E. Hohn; Sundaram Seshu; D. D. Aufenkamp (IRE Trans. Electron. Comput., 1957)

States of sequential machines whose logical elements involve delay - Franz E. Hohn (SWCT, 1962)