Goel, R., S. Nagpal, S. Kamal, S. Kumar, B. Mishra, and P. S. Loomba. “Study of Microbial Growth on Silicone Tubes After Transcanalicular Laser-Assisted Dacryocystorhinostomy and Correlation With Patency”. Nepalese Journal of Ophthalmology, vol. 8, no. 2, Mar. 2017, pp. 119-27, doi:10.3126/nepjoph.v8i2.16992.