@misc{_Beretning_1912,
 editor={Nielsen, Niels (1865–1931)},
 copyright={Public Domain},
 address={Kjøobenhavn},
 address={Kristiania},
 howpublished={online},
 year={1912},
 publisher={Gyldendalske Boghandel Nordisk Forlag},
 language={dan},
 title={Beretning om den anden skandinaviske Matematikerkongres i Kjøoebenhavn 1911. Table of contents and extras},
 type={Text},
 URL={http://rcin.org.pl/Content/79963/PDF/WA35_104773_4567_Beretning-Spis.pdf},
}