Zafar, Shahid Mansoor, Arsalan Yusuf, Zahid Mukhtar, Muhammad Ibrahim, Sher Afzal Khan, Yusuf. 2009. “Expression of a Full Length Arabidopsis Vacuolar H+-Pyrophosphatase (AVP1) Gene in Tobacco (Nicotiana Tabbacum) to Increase Tolerance to Drought and Salt Stresses”. Journal of Phytology 1 (6). https://updatepublishing.com/journal/index.php/jp/article/view/2056.