1. Baldwin, J.F.: 1978A, ?A new approach to approximate reasoning using a fuzzy logic?, to appear in Fuzzy Sets and Systems.
2. Baldwin, J.F.: 1978b, ?Fuzzy logic and approximate reasoning for mixed input arguments?, University of Bristol, Department of Engineering Mathematics, Research Report EM/FS4.
3. Baldwin, J.F.: 1978c, ?A model for fuzzy reasoning and fuzzy logic?, University of Bristol, Department of Engineering Mathematics, Research Report EM/FS10.
4. Baldwin, J.F. and Guild, N.C.F.: 1978, ?Feasible algorithms for approximate reasoning using a fuzzy logic?, University of Bristol, Department of Engineering Mathematics, Research Report EM/FS8.
5. Baldwin, J.F. and Pilsworth, B.W.: 1978, ?Axiomatic approach to implication for approximate reasoning using a fuzzy logic?, University of Bristol, Department of Engineering Mathematics, Research Report EM/FS9.