Medlin, Linda K.; Elwood, Hille J.; Stickel, Shawn; Sogin, Mitchell L. (1991). "Morphological and Genetic Variation Within the Diatom Skeletonema costatum (bacillariophyta): Evidence for a New Species, Skeletonema pseudocostatum1". Journal of Phycology. 27 (4): 514–524. Bibcode:1991JPcgy..27..514M. doi:10.1111/j.0022-3646.1991.00514.x. ISSN1529-8817. S2CID84971128.
Medlin, Linda K.; Elwood, Hille J.; Stickel, Shawn; Sogin, Mitchell L. (1991). "Morphological and Genetic Variation Within the Diatom Skeletonema costatum (bacillariophyta): Evidence for a New Species, Skeletonema pseudocostatum1". Journal of Phycology. 27 (4): 514–524. Bibcode:1991JPcgy..27..514M. doi:10.1111/j.0022-3646.1991.00514.x. ISSN1529-8817. S2CID84971128.
Medlin, Linda K.; Elwood, Hille J.; Stickel, Shawn; Sogin, Mitchell L. (1991). "Morphological and Genetic Variation Within the Diatom Skeletonema costatum (bacillariophyta): Evidence for a New Species, Skeletonema pseudocostatum1". Journal of Phycology. 27 (4): 514–524. Bibcode:1991JPcgy..27..514M. doi:10.1111/j.0022-3646.1991.00514.x. ISSN1529-8817. S2CID84971128.
Medlin, Linda K.; Elwood, Hille J.; Stickel, Shawn; Sogin, Mitchell L. (1991). "Morphological and Genetic Variation Within the Diatom Skeletonema costatum (bacillariophyta): Evidence for a New Species, Skeletonema pseudocostatum1". Journal of Phycology. 27 (4): 514–524. Bibcode:1991JPcgy..27..514M. doi:10.1111/j.0022-3646.1991.00514.x. ISSN1529-8817. S2CID84971128.