"Anmerkung zum Urteil des Kammergerichts, Beschluss vom 31.3.2021 – 22 W 39/21" [Note to the court decision by Higher Regional Court of Berlin as of 31 March 2021 – 22 W 39/21]
Note to the court decision by Higher Regional Court of Berlin as of 31 March 2021 – 22 W 39/21 (only available in German language)
"GWR 2021, Seite 353" [GWR 2021, p. 353]