@INPROCEEDINGS( PSC2012-9, author = " Marcin Pi\k{a}tkowski and Wojciech Rytter ", title = "The Number of Cubes in Sturmian Words", booktitle = "Proceedings of the Prague Stringology Conference 2012", address = "Czech Technical University in Prague, Czech Republic", editor = "Jan Holub and Jan {\v{Z}}{\v{d}}{\'{a}}rek", isbn = "978-80-01-05095-8", year = 2012, pages = "89--102", )