Maximal Vector Spaces Under Automorphisms of the Lattice of Recursively Enumerable Vector Spaces. - Iraj Kalantari; Allen Retzlaff (J. Symb. Log., 1977)

Simple and Hyperhypersimple Vector Spaces. - Allen Retzlaff (J. Symb. Log., 1978)

Recursive Constructions in Topological Spaces. - Iraj Kalantari; Allen Retzlaff (J. Symb. Log., 1979)

Direct Summands of Recursively Enumerable Vector Spaces. - Allen Retzlaff (Math. Log. Q., 1979)