@inbook{10.2307/j.ctt7ztvms.7,
URL = {http://www.jstor.org/stable/j.ctt7ztvms.7},
abstract = {We now extend the basic concepts of Pythagorean tuning beyond the confines of notes 0 through 6. In Section 1 we present a precise description of the conventional musical symbols ♯ and ♭, demonstrating that a flat is an inverse sharp, and Section 2 shows how to compute the frequency of any pitch in Pythagorean tuning within the octave starting at middle C, and how to determine its distance from middle C in cents. Section 3 treats extensively the names of certain chromatic intervals, and shows how to derive the name of the interval, given the names of the notes},
bookauthor = {EASLEY BLACKWOOD},
booktitle = {The Structure of Recognizable Diatonic Tunings},
pages = {49--66},
publisher = {Princeton University Press},
title = {Extended Pythagorean Tuning},
year = {1985}
}