Lütken, C.F. (1857). Oversigt over Grönlands Echinodermer. Videnskabelige Meddelelser fra den naturhistoriske Forening i Kjöbenhavn. 1-7: 1-55, 1 colour map.
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Lütken, C.F.
1857
Oversigt over Grönlands Echinodermer
Videnskabelige Meddelelser fra den naturhistoriske Forening i Kjöbenhavn
The whole volume was published on February 26, 1858 ... preprints were distributed by the author in October 1857, however his printed PhD thesis was published slightly earlier ... on June 19th, 1857