(1)Title: Framboids: Their structure and origin Authors: M. M. Astafieva1, A. Yu. Rozanov1, and R. Hoover2 Issue Date: Vol. 39, No. 5, September-October 2005, pp. 457-464 Publisher: Paleontological Journal 电子链接: http://www.maikonline.com/maik/showArticle.do?auid=VAEDMUNY2C&lang=ru (2)Title: Early diagenetic conditions during formation of the Callovian (Middle Jurassic) carbonate concretions from Łuków (eastern Poland): evidence from organic geochemistry, pyrite framboid diameters and petrographic study. Authors: Marynowski L., Zatoń M., Karwowski Ł. Issue Date: 2008, 247, 191-208 Publisher: N. Jb. Geol. Paläont. Abd. 电子链接: