@article{article, title = {Cold hardiness of diploid and induced tetraploid perennial ryegrass (Lolium perenne L.)}, author = {Lemezis, E.}, year = {1997}, pages = {theories, achievements and problems Proceedings of the international conference, Kedainiai, Lithuania, 14-16 July 1997: 130-135}, howpublished = "\url{https://eurekamag.com/research/003/070/003070813.php}" }