Manfred Kufleitner, Alexander Lauser. The Join of R-trivial and L-trivial Monoids via Combinatorics on Words. Discrete Mathematics & Theoretical Computer Science, 14(1):141-146, 2012. [doi]
@article{KufleitnerL12-0,
title = {The Join of R-trivial and L-trivial Monoids via Combinatorics on Words},
author = {Manfred Kufleitner and Alexander Lauser},
year = {2012},
url = {http://www.dmtcs.org/dmtcs-ojs/index.php/dmtcs/article/view/2081},
researchr = {https://researchr.org/publication/KufleitnerL12-0},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics & Theoretical Computer Science},
volume = {14},
number = {1},
pages = {141-146},
}