@article{article, title = {Urea metabolism and its significance in the nitrogen cycle in the euphotic layer of lake biwa japan iv. regeneration of urea and ammonia}, author = {}, year = {1986}, journal = {Archiv fur Hydrobiologie}, volume = {107}, number = {4}, pages = {425-440}, howpublished = "\url{https://eurekamag.com/research/006/871/006871790.php}" }