Iranian Mathematical Society (IMS) Bulletin of the Iranian Mathematical Society 1017-060X 32 No. 1 2011 01 22 Autoregressive Gaussian Random Vectors of First Order1 19 en A. R. Soltani A. R. Nematollahi M. Sadeghifar 2011 01 22 Autoregressive Gaussian Random Vectors Autoregressive processes Intervention analysis