@article{05281563,
title = {Cyclic quadrangles from squares.},
journal = {Annales Mathematicae et Informaticae},
volume = {33},
year = {2006},
pages = {23-34},
zbl = {1135.51315},
language = {en},
url = {http://dml.mathdoc.fr/item/05281563}
}
Čerin, Zvonko; Gianella, Gian Mario. Cyclic quadrangles from squares.. Annales Mathematicae et Informaticae, Tome 33 (2006) pp. 23-34. http://gdmltest.u-ga.fr/item/05281563/