https://arxiv.org/abs/0802.3885
[0802.3885] Rich, Sturmian, and trapezoidal words
Abstract page for arXiv paper 0802.3885: Rich, Sturmian, and trapezoidal words
08023885richsturmiantrapezoidal
https://arxiv.org/abs/1808.05400v1
[1808.05400v1] Quasi-Sturmian colorings on regular trees
Abstract page for arXiv paper 1808.05400v1: Quasi-Sturmian colorings on regular trees
1808quasisturmiancoloringsregular