Adhikari, B., and S. Tirwari. “<i>Parthenium hysterophorus</I> L.: Highly Allergic Invasive Alien Plant Growing Tremendously in Nepal”. Botanica Orientalis: Journal of Plant Science, vol. 4, no. 1, Aug. 2007, pp. 36-37, https://nepjol.info/index.php/BOTOR/article/view/538.