§§ 19-31 (Groskommentare der Praxis) (in German)
Luis Greco; Johannes Koranyi; Alexander Linke; Uwe Murmann; Bernd SchÜNemann; Torsten Verrel; Gabriele Cirener; Henning Radtke; Ruth Rissing-Van Saan; Thomas Rönnau; Wilhelm Schluckebier; Et Al.,
De Gruyter, 2020, 13 edition, Hardcover, New