Tahir, M. H., Mansoor, M., Zubair, M., & Hamedani, G. (2014). McDonald log-logistic distribution with an application to breast cancer data.
Journal of Statistical Theory and Applications.
Hamedani, G. (2013). The Zografos-Balakrishnan log-logistic distribution: Properties and applications. Journal of Statistical Theory and Applications.
Lee, E.T. (1992) Statistical Methods for Survival Data Analysis. John Wiley: New York.