The Edinburgh multi-access system scheduling and allocation procedures in the resident supervisor. - N. H. Shelness; P. D. Stephens; Harry Whitfield (Symposium on Operating Systems, 1974)

The IMP Language and Compiler. - P. D. Stephens (Comput. J., 1974)

The Evolution of the Operating System EMAS 2900. - P. D. Stephens; J. K. Yarwood; D. J. Rees; N. H. Shelness (Softw. Pract. Exp., 1980)

The Kernel of the EMAS 2900 Operating System. - D. J. Rees; P. D. Stephens (Softw. Pract. Exp., 1982)

Providing Multi-Users Access to Distributed Array Processors. - P. D. Stephens; J. K. Yarwood (Softw. Pract. Exp., 1986)