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- [11] THE ORDOVICIAN-SILURIAN BOUNDARY IN THE GORNYI ALTAI IZVESTIYA AKADEMII NAUK SSSR SERIYA GEOLOGICHESKAYA, 1987, (09): : 69 - 74
- [14] The Ordovician-Silurian boundary in Britain and North America JOURNAL OF GEOLOGY, 1925, 33 (04): : 371 - 388
- [20] A reference region for the Ordovician-Silurian boundary: the Oued in Djerane, Algerian Sahara. COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES, 2000, 330 (01): : 61 - 66