Prakash, J., et al. “Influence of Variable Viscosity on Peristaltic Motion of a Viscoelastic Fluid in a Tapered Microfluidic Vessel”. International Journal of Engineering & Technology, vol. 7, no. 4.10, Oct. 2018, pp. 49-54, https://doi.org/10.14419/ijet.v7i4.10.20705.