1. Commodity bundling and the burden of monopoly;Adams;Q. J. Econ.,1976
2. Multiproduct nonlinear pricing;Armstrong;Econometrica,1996
3. Multi-dimensional screening:: A user’s guide;Armstrong;Eur. Econ. Rev.,1999
4. Competitive non-linear pricing and bundling;Armstrong;Rev. Econ. Stud.,2010
5. Studies in Linear and Non-Linear Programming;Arrow,1958