@article{NCD_2008_12_a15,
     author = {Maria D. Chalkou},
     title = {The mathematical encyclopaedia of the 15th century, {Arithmetical} operations, fractions, progressions, linear equations and roots of real numbers, according to the {Codex} {Vindobonensis} phil. gr. 65 of the 15th century},
     journal = {Review of the National Center for Digitization},
     pages = {119 },
     publisher = {mathdoc},
     volume = {12},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NCD_2008_12_a15/}
}