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.
Nguyen USDT, Rothman KJ, Demissie S, Jackson DJ, Lang JM, Ecker JL. Transfers among women intending a birth center delivery in the San Diego birth center study. J Midwifery Womens Health. 2009 Mar 1;54(2):104-10.