References
The problems with Traditional Notation
Concerns with Traditional Notation Rhythm Notation
Problems reading Intervals in Traditional Music NotationReading and Playing Music by Intervals
Problems reading Traditional Notation. On this webpage, skip the beginning text in German to read the rest in English. In addition to the problem description, it also discusses the author's Alternative Notation as keyboard tablature. It is also described here.
the Music Notation Modernization Association (MNMA) website gallery
The Music Notation Project forum
The MuseScore website has a wide range of scores available for download; scores in the public domain are free while others require a membership subscription.
Klavarskribo Institute home page
Klavarskribo Documentary – Part 1 (1974)
Klavarskribo Documentary - Part 2 (1974)
Klavar Facebook group named "Synthesia on paper!"
Klavar Facebook group Sheet Music and Software
Klavarskribo sheet music display app
Gardner Read's book "Source Book of Proposed Music Notation Reforms"