Concepts of a Data Independent Accessing Model. - Morton M. Astrahan; Edward B. Altman; P. L. Fehder; Michael E. Senko (SIGFIDET Workshop, 1972)

Specifications in a Data Independent Accessing Model. - Morton M. Astrahan; Edward B. Altman; P. L. Fehder; Michael E. Senko (SIGFIDET Workshop, 1972)

Data Structures and Accessing in Data-Base Systems. I: Evolution of Information Systems. - Michael E. Senko; Edward B. Altman; Morton M. Astrahan; P. L. Fehder (IBM Syst. J., 1973)

Data Structures and Accessing in Data-Base Systems. II: Information Organization. - Michael E. Senko; Edward B. Altman; Morton M. Astrahan; P. L. Fehder (IBM Syst. J., 1973)

Data Structures and Accessing in Data-Base Systems. III: Data Representations and the Data Independent Accessing Model. - Michael E. Senko; Edward B. Altman; Morton M. Astrahan; P. L. Fehder (IBM Syst. J., 1973)

HQL: a set-oriented transaction language for hierarchically-structured data bases. - Paul L. Fehder (ACM Annual Conference (2), 1974)