https://www.mimf.com/nutcomp/ Stephen Delft Compensated Nut article.
Greg Byers, of Willits, Ca, a renowned builder of superb classical guitars. Mr Byers provides some interesting information on nut compensation and saddle compensation on his website.
https://www.guitarnutcompensation.com. Luthier Dennis Hook, Rancho Murietta, Ca, custom builds a truly compensated nut for your guitar! Be sure to see his video at https://www.youtube.com/watch?v=mq21e6Pf1T4!
https://www.sternercapo.se/ Anders Sterner, Sweden, specializes in accurate nut and saddle compensation. (for English, click the Brit flag.) He offers this video, which demonstrates the superb intonation which can be achieved. His site also nut compensation info and various other useful information.
https://www.pepithesecond.com/ Pepiderweite (pepi II, of Germany). If you want a brief and to-the-point description of nut compensation, Pepi II, does it well; no wasted words!
https://mcconvilleguitars.blogspot.com/p/compensated-nuts-in-nutshell.html Luthier Michael McConville, Stratford, shares his knowledge of compensated nuts. He earns a gold star for not using the open strings to intone the saddles; interesting that he compares fret 7 to 19 (pretty high).
https://www.julianmullenguitars.co.uk/ Julian Mullen Guitars, Reading, Berkshire, UK- Handcrafted instruments, repair, and restoration, nut compensation.
https://luthierscentre.com/en The Luthierscentre, Rousse, Bulgaria, is a non-profit organization fostering lutherie of bowed and plucked instruments,offering events, classes and literature. Information at: https://www.guitarmakingcompetition.com/
https://www.doolinguitars.com Mike Doolin, High-end builder, author of great articles on intonation.
https://www.liutaiomottola.com Liutaio Mottola. Lots of lutherie information.
https://www.petersontuners.com Peterson Strobe Tuners.
https://www.petersontuners.com/index.cfm?category=83 Peterson Product Manuals.
https://www.petersontuners.com/iforum/index.php Peterson User's Forum.
https://www.acousticguitarforum.com/forums/index.php Acoustic Guitar Forum.
https://www.activesearchresults.com/searchform.php A search engine.
https://www.avalonmusic.net Avalon Music, Wenatchee WA.