+ wishlist Add to Cart The item has been added Author: Andreas Potschka A Direct Method for Parabolic PDE Constrained Optimization Problems (Advances in Numerical Mathematics) [9783658044756] 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 $54.99 Format: Paperback