The Academy confers the degrees of master, licentiate, doctor and habilitated doctor. In 1966 Paczkowski defended his doctorate thesis, and was habilitated in 1975. In 1886, he went to Leipzig where he habilitated with Gustav Heinrich Wiedemann until 1888. In Bonn he habilitated in 1899 and taught there until 1923. In 1994 he was habilitated at the University of Bonn. In 1847 Eisenstein habilitated at the University of Berlin, and he began to teach there. In 1988, he habilitated with an examination on the work of Erik Gustaf Geijer. On August 1, 1950, he habilitated in zoology at the Brandenburgische Landeshochschule in Potsdam. Gadamer habilitated in 1929 and spent most of the early 1930s lecturing in Marburg. In 2000, she habilitated in Informatics at the University of Vienna. He habilitated 1889 for geography and geophysics with the collected scientific evidence. There, he was habilitated and made a full professor in 1913. In 2003 he was habilitated at the same university. He was habilitated for pathological anatomy in 1903. In 1980, he habilitated in Algebraic Geometry and Representation Theory.