DIE ZECHSTEIN-SEDIMENTATION IN DER POLNISCH-LITAUISCHEN SYNEKLISE.(LA SEDIMENTATION AU ZECHSTEIN DANS LE SYNECLYSE DE POLOGNE-LITHUANIE).SUVEIZDIS PI.1968; Z. ANGEW. GEOL.; DDR; 1968(1), VOL. 14, NUM. 0001, P. 25 A 28Miscellaneous

THE PERMIAN-TRIASSIC BOUNDARY ON THE RUSSIAN PLATFORM.LAPKIN IJ; LAPKIN I YU; BLOM GI et al.1973; CANAD. SOC. PETROLEUM GEOLOGISTS, MEM.; CANADA; DA. 1973; NO 2; PP. 150-157; BIBL. 2 REF.; (PERMIAN TRIASSIC SYST. MUTUAL BOUNDARY. INT. PERMIAN-TRIASSIC CONF.; CALGARY; 1971)Conference Paper