Michael Keane: Interval exchange transformations. Math. Zeitschr. 141 (1975), 25-31. Michael Keane: Non-ergodic interval exchange transformations. Israel J. Math. 26 (1977), 188-196. Howard Masur: Interval exchange transformations and measured foliations. Ann. Math. 115 (1982), 169-200. Corinna Ulcigrai: Trasformazioni di scambi di intervalli e foliazioni misurate su superficie. Tesi Univ. Pisa, ca. 2002. William Veech: Interval exchange transformations. J. d'Analyse Math. 33 (1978), 222-272.