@unpublished{betti_wissenschaftslehre_nodate, title = {Wissenschaftslehre {Wiki} {Project} [deprecated]}, author = {Betti, Arianna and Blok, Johan and Huijgen, Paul and Loeb, Iris and Roski, Stefan and Sikkel, Constantijn and Koleva, Mariya and van den Berg, Hein}, keywords = {Bolzano}, }