@article{Fraenkel&Simpson:1995,
	key = "Fraenkel and Simpson 1995",
	author ="A. S. Fraenkel and J. Simpson", 
	title = "How many squares must a binary sequence contain?",
	journal = ELECJC,
	volume = 2,
	pages = "{\#}R2",
	year = 1995,
	comment = "Second author is really R. J. Simpson"}

@techreport{Allouche&Cateland&Peitgen&Shallit&Skordev:1995,
	key = "Allouche, Cateland, Peitgen, Shallit, and Skordev 1995",
	author = "Allouche, J.-P. and Cateland, E. and Peitgen, H.-O. and
Shallit, J. and Skordev, G. ", 
	title = "Automatic maps on a semiring with digits",
	number = 339, 
	year = 1995,
	month = "May",
	institution = "{Universt\"at} Bremen,
Institute {f\"ur} Dynamische Systeme"}

@incollection{Goertzel:1993,
	key = "Goertzel 1993",
	author = "Goertzel, B.",
	title = "On the Structural Complexity of Sequences,
Images, and Automata",
	booktitle = "Finite Fields, Coding Theory, and Advances in
Communications and Computing",
	series = "Lecture Notes in Pure and Applied Mathematics",
	year = 1993,
	publisher = "Marcel Dekker",
	editor = "G. L. Mullen and P. J.-S. Shiue",
	volume = 141,
	pages = "307-327"}