The Viable System Model (VSM)

The VSM on the Wikipedia

The VSM by Raul Espejo (UK)

The VSM by Allena Leonard (Canada)

The VSM on the Cybernetics Associates website (UK)

The VSM by Fredmund Malik (Swiss)

The VSM by Tom Graves (UK)

Enterprise-architecture by Tom Graves (UK)

Theories of Viability:a Comparison by Markus Schwaninger (CH)

The VSM Guide by Jon Walker (UK)

The VSM by Jim Underwood (Australia)

The VSM by Todorka Kovacheva (Bulgaria)

The VSM by Bill Hutchinson and Mat Warren (Australia)

The VSM by David HC Soul

From "The Viable System Model" presentation by Trevor Hilder (UK)

Much of what Stafford wrote in the 1960s and 1970s seems
remarkably prescient. Unfortunately, his warnings at that
time about the urgent need for institutions to be reformed
went largely unheeded. Many of the consequences which he
predicted have come about already.
The body of knowledge which is exemplified in his work remains
largely unexploited in common practice. The need for action is,
in my view, more urgent than ever before. ..."

The essential VSM (UK)

The VSM and the Medicine (UK)

The VSM on the Cwarel Isaf Institute website (Switzerland)

The VSM by Vladimir Khitsenko (rus-Russia)

The VSM as a tool for organizations analysis by Dmitry Reut (rus-Russia)

Organization as viable system by Andrey Sergeev (rus-Ukraine)

Applied Cybernetics by Igor Lobanov (rus)