References Adams WJ, Yellen JL. Commodity bundling and the burden of monopoly. The Quarterly Journal of Economics 1976;90; 75-498. Ahn J, Jeong G, Kim Y. A forecast of household ownership and use of alternative fuel vehicles: A multiple discrete-continuous choice approach. Energy Economics 2008;30; 2091-2104. Allenby GM, Rossi PE. Marketing models of consumer heterogeneity. Journal of Econometrics 1999;89; 57-78. Bhat CR. A multiple discrete-continuous extreme value model: Formulation and application to discretionary time-use decisions. Transportation Research: Part B 2005;39; 679-707. Bhat CR. The multiple discrete-continuous extreme value (MDCEV) model: Role of utility function parameters, identification considerations, and model extensions. Transportation Research Part B 2008;42; 274-303. Bhat CR, Sen S. Household vehicle type holdings and usage: an application of the multiple discrete-continuous extreme value (MDCEV) model. Transportation Research: Part B 2006;40; 35-53. Byeon JW, Kim JH, Kim ST, Oh KS, Kang IG. Theoretical research for bundling products on ICT services. Korea Information Society Development Insititute; 2006. Carlton DW, Waldman M. The Strategic use of tying to preserve and create market power in evolving industries. RAND Journal of Economics 2002;33; 194-220. Choi JP. Bundling new products with old to signal quality, with application to the sequencing of new products. International Journal of Industrial Organization 2003;21; 1179-1200. Choi BH. Sales of bundling products and prospect. Korea Telecommunications Operators Association 2007;40; 31-36. Edwards YD, Allenby GM. Multivariate analysis of multiple response data. Journal of Marketing Research 2003;40; 321-334. Fisher FM. Games economists play: A noncooperative view. RAND Journal of Economics 1989;14; 522-530. Greenlee P, Reitman D, Sibley DS. An antitrust analysis of bundled loyalty discounts. International Journal of Industrial Organization 2008;26; 1132-1152. Huber J, Train K. On the similarity of classical and Bayesian estimates of individual mean partworths. Marketing Letters 2001;12; 259-269. International Salt Co., Inc. v. United States, 332 U.S. 392; 1947. Johnson MD, Herrmann A, Bauer HH. The effects of price bundling on consumer evaluation of product offerings. International Journal of Research in Marketing 1999;16; 129-142. Kim J, Allenby GM, Rossi PE. Modeling consumer demand for variety. Marketing Science 2002;21; 229-250. Koop G. Bayesian econometrics. Wiley: Cambridge; 2003. McAfee RP, McMillan J, Whinston MD. Multiproduct monopoly, commodity bundling, and correlation of values. The Quarterly Journal of Economics 1989;104; 371-383. Northern Pacific Railway Company v. United States, 356 U.S. 1; 1958. Peitz M. Bundling may blockade entry. International Journal of Industrial Organization 2008;26; 41-58. Posner RA. Antitrust law, an economic perspective. Chicago: University of Chicago Press; 1976. Posner RA. Antitrust in the new economy. Antitrust Law Journal 2001;68; 925-943). Shapiro C. The Theory of Business Strategy. RAND Journal of Economics 1989;20;125-137. Spector D. Bundling, tying, and collusion. International Journal of Industrial Organization 2007;25; 575-581. Stremersch S, Tellis G.J. Strategic bundling of products and prices: A new synthesis for marketing. The Journal of Marketing 2002;66; 55-72. Tirole J. The analysis of tying cases: A primer. Competition Policy International 2005;1; 1-25. Train K. Discrete choice methods with simulation. Cambridge University Press: Cambridge; 2003. Whinston MD. Tying, foreclosure, and exclusion. The American Economic Review 1990;80; 837-859.