https://ada.auckland.ac.nz/ada14aft.htm
Part One, Chapter 4 Afternote
part onechapter
https://experts.arizona.edu/en/publications/afternote-to-coupling-at-a-distance-convergence-analysis-and-a-pr/
Afternote to "Coupling at a Distance": Convergence Analysis and A Priori Error Estimates -...
at a distance