1. L. J. Bain, M. Englehardt. Statistical Analysis of Reliability and Life-Testing Models: Theory and Methods, 2nd ed. Marcel Dekker, New York, 1991.
2. W. Q. Meeker, L. A. Escobar. Statistical Methods for Reliability Data. John Wiley & Sons, Inc., New York, 1998.
3. J. F. Lawless. Statistical Models and Methods For Lifetime Data, 2nd ed. John Wiley & Sons, Inc., New York, 2003.
4. O. Hryniewicz. Lifetime Tests for Imprecise Data and Fuzzy Reliability Requirements, Reliability and Safety Analyses under Fuzziness, T. Onisawa, J. Kacprzyk (eds.), Physica Verlag, Heidelberg, pp. 169–179, 1995.
5. P. Grzegorzewski, O. Hryniewicz. Computing with words and life data. International Journal of Applied Mathematics and Computer Science, vol. 12, no. 2, pp. 337–345, 2002.