The somewhere else is NOT The Darkroom Cookbook.
Get hold of some photochemistry texts from the 1940's-1960's and you will find useful info upon which you can depend.
British Journal of Photography was an excellent source for many years and they are relatively easy to find. The American Journal of Photography was OK, but not as good as the British.
Also do a search on here and other forums. Mymemory says that within the past couple of years, 777 was thoroughly discussed and a close cousin formula divulged.