Egon Balas The Asymmetric Assignment Problem and Some New Facets of the Traveling Salesman Polytope on a Directed Graph. [Citation Graph (0, 0)][DBLP] SIAM J. Discrete Math., 1989, v:2, n:4, pp:425-451 [Journal]
Geoffrey Exoo On Two Classical Ramsey Numbers of the Form R(3, n). [Citation Graph (0, 0)][DBLP] SIAM J. Discrete Math., 1989, v:2, n:4, pp:488-490 [Journal]
Frank K. Hwang Y. C. Yao: Cutoff Point and Monotonicity Properties for Multinomial Group Testing. [Citation Graph (0, 0)][DBLP] SIAM J. Discrete Math., 1989, v:2, n:4, pp:500-507 [Journal]