HerychM. S., and GusakD. V. “On the Moment-Generating Functions of Extrema and Their Complements for Almost Semicontinuous Integer-Valued Poisson Processes on Markov Chains”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 67, no. 8, Aug. 2015, pp. 1034-49, https://umj.imath.kiev.ua/index.php/umj/article/view/2044.