Faces of dual transportation polyhedra -- A submodular network simplex method -- Uncapacitated lot-sizing: The convex hull of solutions -- Node-weighted graphs having the Kรถnig-Egervรกry property -- A polynomial-time test for total dual integrality in fixed dimension -- Inaccuracy in quasi-Newton methods: Local improvement theorems -- Orientation of matrices -- Covering directed and odd cuts -- Submodular systems and related topics -- Inner estimates for the generalized gradient of the optimal value function in nonlinear programming -- Numerical methods for basic solutions of generalized flow networks -- Modelling with integer variables -- Multipoint methods for separable nonlinear networks -- Normal solutions of linear programs -- Local structure of feasible sets in nonlinear programming, part II: Nondegeneracy -- Performance of approximate algorithms for global minimization -- Some optimization problems with extremal operations