@article{PokuttaVanVyve2013, author = {Sebastian Pokutta and M. VanVyve}, title = {A note on the extension complexity of the knapsack polytope}, journal = {Operations Research Letters}, volume = {41}, pages = {347 -- 350}, url = {http://www.optimization-online.org/DB_HTML/2013/02/3787.html}, year = {2013}, }