T. Clement. Using Metavariables in Natural Deduction Proofs. In Cliff B. Jones, Roger C. Shaw, B. Tim Denvir, editors, 5th Refinement Workshop, Proceedings of the 5th Refinement Workshop, organised by BCS-FACS, London, 8-10 January 1992. Workshops in Computing, pages 255-271, Springer London, 1992. [doi]
Abstract is missing.