Sanguineti, Marcello and Cello, Marco and Gnecco, Giorgio and Marchetti, Riccardo  Optimality Conditions for Coordinate-Convex Policies in Call Admission Control via a Generalized Stochastic Knapsack Model.  In: EURP 2013, July 1st-4th, 2013, Rome, Italy p. 132.        (2013)