Ehrenberg, 1834

Ehrenberg, C.G., 1834: Dritter Beitrag zur Erkenntniss grosser Organisation in der Richtung des kleinsten Raumes. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin, aus dem Jahre 1833, p.145-336. [From the publication it is clear that this work was presented in July 1832, published as a separate in May 1834, and published in the journal in 1835; thus, effective publication was May 1834.]