+ wishlist Add to Cart The item has been added Author: Elena Shchepakina Vladimir Sobolev Michael P. Mortell Singular Perturbations: Introduction to System Order Reduction Methods with Applications (Lecture Notes in Mathematics #2114) [9783319095691] 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