411 REFERENCE · Wikibooks
On 2D Inverse Problems/Acknowledgements
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Volume I: Wikipedia, StackExchange and SageMathCloud helped publishing the book @all stages of the process.
Volumes II and III: Copilot/Covid, Gemini/Germany and Meta/eta/beta/zeta AI on cellphone and laptop...