Microtonal music

William A. Sethares. Tuning, Timbre, Spectrum, Scale - Why we divide octave into 12 equal parts, how is it related to string harmonics and how to create artificial timbres that make music in other tunings more consonant. With audio examples

Easley Blackwood. Microtonal Compositions. He also published an article "Blackwood, E. (1991). Modes and Chord Progressions in Equal Tunings"

Xenharmonic Wiki
https://learningmusic.ableton.com/advanced-topics/19-tone.html
Andrew M. Blake. COMPUTATIONAL ANALYSIS OF QUARTER-TONE COMPOSITIONS BY CHARLES IVES AND IVAN WYSCHNEGRADSKY
Eirik Trovåg Bjørneset. Å popularisere mikrotonalitet
Now and Zen - a podcast
http://www.tonalsoft.com/enc/encyclopedia-index.aspx
https://yahootuninggroupsultimatebackup.github.io/tuning/
https://mtosmt.org/issues/mto.19.25.1/mto.19.25.1.willis.html