Girard, D. Z. “A Comparative Economic Analysis of Immunization Programs for Pertussis and Measles: The Use of ARIMA Model to Study the Epidemiological Situation in England and Wales”. International Journal of Statistics in Medical Research, vol. 2, no. 3, July 2013, pp. 167-80, doi:10.6000/1929-6029.2013.02.03.1.