@inbook{Akagi_2018,
title={Hard and Easy Instances of L-Tromino Tilings},
ISBN={9783030105648},
ISSN={1611-3349},
url={http://dx.doi.org/10.1007/978-3-030-10564-8_7},
DOI={10.1007/978-3-030-10564-8_7},
booktitle={Lecture Notes in Computer Science},
publisher={Springer International Publishing},
author={Akagi,
Javier T. and Gaona,
Carlos F. and Mendoza,
Fabricio and Saikia,
Manjil P. and Villagra,
Marcos},
year={2018},
month=dec,
pages={82–95} }