1. Combinatorial and statistical properties of sequences generated by substitutions;Dekking;Ph.D. thesis,1980
2. The bracket function and complementary sets of integers;Fraenkel;Canad. J. Math,1969
3. Determination of [nθ] by its sequence of differences;Fraenkel;Canad. Math. Bull,1978
4. Scientific American;Gardner,1977
5. Functions which represent all integers;Gilbert;Amer. Math. Monthly,1963