Francesca Maggioni Georg Ch. Pflug Bounds and Approximations for Multistage Stochastic Programs. 831-855 2016 26 SIAM J. Optim. 1 https://doi.org/10.1137/140971889 https://www.wikidata.org/entity/Q59254839 db/journals/siamjo/siamjo26.html#MaggioniP16