For an introduction to the Value Exchange System (VES), you can refer to the handbook first published in 2019. The link is here
The associated We Space Theory (WST) developed by Professor Charles (Kalev) Ehin is summarised in the publication here
The professional technical paper on "value networks", written by VES co-creators and peer-reviewed by members of the Institution of Civil Engineers in the UK, published in May 2012, can be purchased here
