1. Alphabet independent two-dimensional pattern matching;Amir,1992
2. Representation geométrique de suites de complexité 2n + 1;Arnoux;Bull. Soc. Math. France,1991
3. Fine and Wilf's theorem for three periods and a generalization of Sturmian words;Castelli;Theor. Computer Se.,1999
4. Uniqueness theorem for periodic functions;Fine,1965
5. Generalizations of the periodicity theorem of Fine and Wilf;Giancarlo,1994