Adams, W.; Yellen, J. (August 1976). "Commodity bundling and the burden of monopoly". Quarterly Journal of Economics. 90 (3): 475–498. doi:10.2307/1886045. JSTOR1886045.
Adams, W.; Yellen, J. (August 1976). "Commodity bundling and the burden of monopoly". Quarterly Journal of Economics. 90 (3): 475–498. doi:10.2307/1886045. JSTOR1886045.