+ wishlist Add to Cart The item has been added Author: L. Ljung G. Pflug H. Walk Stochastic Approximation and Optimization of Random Systems (Oberwolfach Seminars #17) [9783764327330] Buy More - Save More. Below are the available bulk discount rates for each individual item when you purchase a certain amount Quantity Price Savings 25 - 49 12% 50 - 99 13% 100+ 14% List Price As Low as $39.95 Format: Paperback