Катий (етаж) (Bulgarian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Катий (етаж)" in Bulgarian language version.

refsWebsite

Global rank Bulgarian rank

850^th place

801^st place

2^nd place

7^th place

1stratigraphy.org

2,562^nd place

3,219^th place

doi.org

dx.doi.org

Bergström, Stig и др. Three new Ordovician global stage names // Lethaia 39 (3). 31 август 2006. DOI:10.1080/00241160600847439. с. 287–288.

purdue.edu

engineering.purdue.edu

GSSP Table – Paleozoic Era // Geologic Timescale Foundation. Посетен на 2 декември 2012.
GSSP for Katian Stage // Geologic Timescale Foundation. Посетен на 2 декември 2012.

stratigraphy.org

Goldman, Daniel и др. The Global Stratotype Section and Point (GSSP) for the base of the Katian Stage of the Upper Ordovician Series at Black Knob Ridge, Southeastern Oklahoma, USA // Episodes 30 (4). 2007. с. 258–270. Посетен на 20 септември 2012.