@article{NCD_2006_9_1_a7,
     author = {Maria D. Chalkou},
     title = {The {Pythagorean} rule and its application, according to a {Greek} manuscript of the 15th century in {Wien}},
     journal = {Review of the National Center for Digitization},
     pages = {63 - 70},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {2006},
     url = {http://geodesic.mathdoc.fr/item/NCD_2006_9_1_a7/}
}