This paper is taken from a special supplement to the journal Management Science at the end of 50 years. The supplement reproduces 10 of the most important papers published in Management Science. Each paper is followed by a commentary by the author(s) and other scholars that offers insights into the background, creation, or subsequent impact of the paper. For this abstracting journal, the pagination is that of reproduction and comments. The original authors are included in the title, and the author of the commentary is given as the corresponding author.
