00487nam a2200145Ia 4500020001800000082001900018100002900037245009500066260005200161300002800213490003400241500005600275500000500331700000500336  a9780821844809  a511.6bB535.CW  aBerstel, Jean and others  aCombinatorics on wordsbchristoffel words and repetitions in wordscJean Berstel ...et.al.  aProvidencebAmerican Mathematical Societyc2009  axii, 147p. Bibl. Index.  aCRM monograph series v V. 72  a"Purchased under NBHM grant for the year 2009-2010"  a  a