International journal of general systems.
New York : Gordon and Breach Science Publishers,
1974-
Published by Taylor & Francis in Abingdon, UK, 
Biological abstracts
Computer & control abstracts
Electrical & electronics abstracts
Engineering index annual (1968)
Engineering index bioengineering abstracts
Engineering index energy abstracts
Engineering index monthly (1984)
Mathematical reviews
Physics abstracts. Science abstracts. Series A
System theory