Generalized Field Equations
The editor of this blog seems not to do what I wanted. So I suggest you follow the link:
Field equations by Hans van Leunen https://doc.co/sRXxXN
It is part of https://docs.com/hans.van.leunen
You can also visit forumĀ http://forums.naturalphilosophy.org/showthread.php?tid=42