Angel  V. Nikolov, 
    K-Out-Of N: G System with Multiple Failure Modes and Single Repair Facility,
    Asian Journal of Information Technology,
    Volume 10,Issue 2,
    2011,
    Pages 55-59,
    ISSN 1682-3915,
    ajit.2011.55.59,
    (https://makhillpublications.co/view-article.php?doi=ajit.2011.55.59)
    Abstract: This study presents models of a K-out-of N: G system subject to multiple failure modes. Times between failures are exponentially distributed and repair times follow general distribution. Solutions for point wise and steady state reliability parameters are derived for two distinct repair policies.
    Keywords: general distribution;repair;G system;K-out-of N;multiple failure modes;discrete transform