中国科学院数学与系统科学研究院期刊网
ON THE NECESSARY AND SUFFICIENT CONDITIONS FOR THE EXISTENCE OF STATIONARY SOLUTIONS TO THE DOUBLY STOCHASTIC TIME SERIES AR-MA MODELS
LU ZUDI
Acta Mathematicae Applicatae Sinica . 1994, (3): 374 -387 .  DOI: 10.12387/C1994038