@article{WoRMS:SourceID:47480, author = {Sladen, W.P.}, journal = {Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–1876. Zoology}, note = {Also digitized at Biodiversity Heritage Library}, title = {Report on the Asteroidea}, url = {http://www.19thcenturyscience.org/HMSC/HMSC-Reports/Zool-51/README.htm}, year = {1889} }