Shakya, G., S. Malla, M. Sharma, and R. Panth. “Estrogen Receptor and Progesterone Receptor Status in Different Types of Breast Cancers”. Journal of Nepal Health Research Council, vol. 5, no. 2, Dec. 2009, pp. 26-32, https://nepjol.info/index.php/JNHRC/article/view/2468.