D. S. Srinivasa Rao, D. Sowjanya, C. Dileep Chowdary, and M. Harika, “Analyzing the Improved Software Reliability Based on the Markov Model by Considering Error propagation”, IJET, vol. 7, no. 2.32, pp. 91–93, May 2018, doi: 10.14419/ijet.v7i2.32.13534.