@article{article, title  = {{Ammonium can stimulate nitrate and nitrite reductase in the absence of nitrate in Clematis vitalba}},

 url = {{}},

 year = {{1999}},

 month = {{7}},

 author = {{Bungard RA and Wingler A and Morton JD and Andrews M and Press MC and Scholes JD}},

 volume = {{22}},

 journal = {{PLANT CELL ENVIRON}},

 issue = {{7}},

 pages = {{859-866}},

 note = {{Accessed on 2024/09/19}}}