@Article{vsv-2007, title = {On ascending {V}ickrey auction for heterogeneous objects}, author = {Sven de Vries and James Schummer and Rakesh V. Vohra}, journal = {J. Econom. Theory}, url= {http://linkinghub.elsevier.com/retrieve/pii/S0022053105002024}, year = 2007, volume = 132, number = 1, pages = {95--118}}