Exercitatio Astronomica De Statione Solis tempore Josuæ, Quam [...] examini sistunt Præses M. Johannes Jacobus Botsaccus, Gedanensis & Respondens Martinus Ludewig [...] D. 28. Septembr. [...]. - Ludewig, Martin (czynny 1679) (Literis Michaelis Meyeri, 1670)