@book{UBHD-1048031, author={Mortensen, Niels Theodor Rosenkrands}, title={Det lange ekko}, subtitle={om maleren Albert Berthelsen}, publisher={Grevas}, address={Århus}, year={1971}, pages={12 S.}, language={dan}, isbn={87-7235-949-8 and 978-87-7235-949-6}, library={UB [Signatur: 75 B 3870]}, }