Changes
<ref name="GaSh">D. Gale, L.S. Shapley, ''College admissions and stability of marriage'', Amer. Math. Monthly (1962) 69(1), 9-15. [http://www.jstor.org/stable/2312726 JSTOR link].</ref>
<ref name="Ir">R. W. IrwingIrving, ''An efficient algorithm for the stable roommates problem'', J. Algorithms 6 (1985), 577-595. [http://dx.doi.org/10.1016/0196-6774(85)90033-1 DOI link].</ref>
<ref name="FlIrMa">T. Fleiner, R. W. Irwing, D. F. Manlove, ''An algorithm for a super-stable roommates problem'', [http://dx.doi.org/10.1016/j.tcs.2011.09.012 DOI link], [http://www.cs.elte.hu/egres/tr/egres-08-06.pdf EGRES Technical Report no. 2008-06].</ref>
