@article{LR2007,
 author= "F. Lev\'e and G. Richomme",
 title = "Quasiperiodic {S}turmian words and morphisms",
 year = "2007",
 OPTurl= "http://www.citebase.org/cgi-bin/citations?id=oai:arXiv.org:cs/0601027",
 journal= {Theoretical Computer Science},
 volume= {372},
 number={1},
 pages = {15-25}, 
 }