@article{article,
title = {Breeding for improvement of flowering attributes of winter hardy rosa rugosa hybrids},
author = {Svejda, F.},
year = {1977},
journal = {Euphytica},
volume = {26},
number = {3},
pages = {697-702},
howpublished = "\url{https://eurekamag.com/research/004/859/004859230.php}"
}