Herring WL, Herrmann JW. A stochastic dynamic program for the single-day surgery scheduling problem. IIE Trans Healthc Syst Eng. 2011 Dec 1;1(4):213-25.
Knox D, Gibson L, Zusman ME, Gallmeier C. Why college students end relationships. Coll Stud J. 1997 Jan 1;31(4):449-52.