Classes of structurally isomorphic np-optimization problems

Ausiello, G., D’Atri, A., Gaudiano, M., & Protasi, M. (1977). Classes of structurally isomorphic np-optimization problems. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 53 LNCS, pp. 222–230). Springer Verlag. https://doi.org/10.1007/3-540-08353-7_139