@article{KotsireasKoutschan21,
 author = {Ilias Kotsireas and Christoph Koutschan},
 title = {Legendre pairs of lengths $\ell \equiv 0$ (mod 3)},
 journal = {Journal of Combinatorial Designs},
 isbn_issn = {ISSN 1063-8539},
 year = {2021},
 volume = {29},
 number = {12},
 pages = {870--887},
 doi = {10.1002/jcd.21806},
}