Sums of α-spaces. - Northrup Fowler III (Notre Dame J. Formal Log., 1975)

alpha-Decompositions of alpha-Spaces. - Northrup Fowler III (J. Symb. Log., 1976)

Effective inner product spaces. - Northrup Fowler III (Notre Dame J. Formal Log., 1978)

The ARPA-Rome Knowledge-Based Planning and Scheduling Initiative. - Northrup Fowler III; Stephen E. Cross; Chris Owens (IEEE Expert, 1995)