ijcas期刊是几区

ijcas期刊是几区?？
ijcas期刊是4区.iet control theory and applicationInternational journal of system scienceCIRCUITS SYSTEMS AND SIGNAL PROCESSINGINTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
iet control theory and application International journal of system science CIRCUITS SYSTEMS AND SIGNAL PROCESSING INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS