@misc{Smith_O._A._En_1912,
 author={Smith, O. A.},
 editor={Nielsen, Niels. Ed.},
 copyright={Rights Reserved - Restricted Access},
 address={Kjøobenhavn},
 address={Kristiania},
 howpublished={online},
 year={1912},
 publisher={Gyldendalske Boghandel Nordisk Forlag},
 language={dan},
 title={En Sætning om den lineære homogene Differentialligning af anden Orden hvis koeficienter er anden Grads Polynomier},
 type={Text},
}