1. Links with Zero Alexander Polynomial;Cochran,1970
2. Corresponding group and module sequences;Crowell;Nagoya Math. J.,1961
3. Torsion in link modules;Crowell;J. Math. Mech.,1965
4. Introduction to Knot Theory;Crowell,1963
5. On the elementary ideals of link modules;Crowell;Trans. Amer. Math. Soc.,1969