Montshiwa, Volition Tlhalitshi, and Ntebogang Dinah Moroke. “The Effect of Sample Size on the Efficiency of Count Data Models: Application to Marriage Data”. Journal of Economics and Behavioral Studies, vol. 9, no. 3(J), July 2017, pp. 6-18, https://doi.org/10.22610/jebs.v9i3(J).1742.