%0 Journal Article %T Pythagorean ratios in arithmetic progression, part i. three Pythagorean ratios %J Glasgow mathematical journal %D 1993 %P 395-407 %V 35 %N 3 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009988/ %R 10.1017/S0017089500009988 %F 10_1017_S0017089500009988