Derek Hitchins (1935) British systems engineer
Source: Putting systems to work (1992), p. 6; as cited in: Stuart Anderson (2006) "Heterogeneous Modelling of Evolution for Socio-technical Systems"
Robert L. Flood (1993) Dealing with Complexity: An Introduction to the Theory and … - Pagina 127.
Derek Hitchins (1935) British systems engineer
Source: Putting systems to work (1992), p. 6; as cited in: Stuart Anderson (2006) "Heterogeneous Modelling of Evolution for Socio-technical Systems"
Béla H. Bánáthy (1919–2003) Hungarian linguist and systems scientist
Source: Systems Design of Education (1991), p. 31 as cited in: K.C Laszlo (1998) Dimensions of Systems Thinking http://archive.syntonyquest.org/elcTree/resourcesPDFs/Systems_Thinking.pdf. Working paper on syntonyquest.org
John Zachman (1934) American computer scientist
Source: Business Systems Planning and Business Information Control Study: A comparison, 1982, p. 31
Russell L. Ackoff (1919–2009) Scientist
Ackoff (1999). "Disciplines, the two cultures and the scianities". Systems Research and Behavioral Science. 16 (6), p. 537. Cited in: Sherryl Stalinski (2005) A Systems View of Social Systems, Culture and Communities. Saybrook Graduate School. p. 5.
1990s
Elmer Eric Schattschneider (1892–1971) American political scientist
Source: Two Hundred Million Americans in Search of a Government (1969), p. 24
Mike Jackson (1951) systems scientist
Michael C. Jackson (1992) Systems Methodology for the Management Sciences. p. 74; About A.D. Hall (1962)
“There seem to be two fundamental schisms in thinking: the hard/soft and the open/closed.”
Derek Hitchins (1935) British systems engineer
Source: Putting systems to work (1992), p. 6
Russell L. Ackoff (1919–2009) Scientist
Cited in: Haluk Demirkan, James C. Spohrer, Vikas Krishna (2011) The Science of Service Systems. p. 274.
1970s, Towards a System of Systems Concepts, 1971
C. West Churchman (1913–2004) American philosopher and systems scientist
Source: 1940s - 1950s, Introduction to Operations Research (1957), p. 7; cited in Werner Ulrich (2004, p. 210)