Javadzadeh, M., Z. Hashemi, M. Roudbari, F. Mahvelati, and S. Jalilolghadr. “Sleep Patterns and Sleep Disorders in Primary School Children in Qazvin, Iran”. Iranian Journal of Child Neurology, vol. 2, no. 4, Jan. 2009, pp. 15-19, doi:10.22037/ijcn.v2i4.556.