Shikha Singh, and Vivek Kumar. “Modelling and Analysis of the Spread of Carrier Dependent Infectious Diseases: Effect of Cumulative Density of Infrastructure”. Journal of International Academy of Physical Sciences, vol. 20, no. 2, June 2016, pp. 107-29, https://www.iaps.org.in/journal/index.php/journaliaps/article/view/396.