Parameter Estimation of a Seasonal Poisson INAR(1) Model with Different Monthly Means 
Turaj Vazifedan, Homa Jalaeian Taghadomi , Xixi Wang , and Mujde Erten-Unal
Journal of Data Science . 2020, (4): 697 -717 .  DOI: 10.6339/JDS.202010_18(4).0007