@Article{299487,
     author = "Pieter Johannes Sijpesteijn",
     title = "Einige Ostraka der Giessener Ostrakasammlung ",
     year =  1971,
     volume =  16-17,
     number =  ,
     journal =  The Journal of Juristic Papyrology,
     pages =  s. 99-104,
    }