THE PYTHAGOREAN RULE AND ITS APPLICATION, ACCORDING TO A GREEK MANUSCRIPT OF THE 15 TH CENTURY IN WIEN

http://www.ncd.matf.bg.ac.rs/journal/09/NCD09063.pdf

SOURCE: MARIA CHALKOU, THE MATHEMATICAL CONTENT OF THE CODEX VINDOBONENSIS PHIL. GR. 65 OF THE 15TH CENT. INTRODUCTION, EDITION AND COMMENTS, PUB. BYZANTINE RESEARCH CENTER, ARISTOTELEAN UNIVERSITY OF THESSALONIKI, JUNE 2006.

THE THIRD EDITION (2014) AS AN EBOOK with title: Ta Vyzantina Mathematika, The Codex Vindobonensis phil. gr. 65 of the 15th cent. vol. I (Arithmetike-Algevra-Logistike)

THE THIRD EDITION (2014) AS AN EBOOK with title: Ta Vyzantina Mathematika, The Codex Vindobonensis phil. gr. 65 of the 15th cent. vol. II (Geometria-Geodaisia)