1. The Frasnian/Famennian boundary at El Atrous, Tafilalt, Morocco;Becker,1989
2. Thermal maturation and burial history from conodont colour alteration data, Holy Cross Mountains, Poland;Belka;Courier Forsch. -Inst. Seckenberg,1990
3. The electron spin resonance technique in conodont studies;Belka,1987
4. The Givetian-Frasnian boundary in pre-Sahara Morocco;Bensaid;Courier Forsch.-Inst.,1985
5. Le métamorphisme hercynien dans les formations Tardi et post-panafricaines de l'Anti-Atlas occidental (Maroc). Données isotopiqués Rb/Sr et K/Ar des fractions fines;Bonhomme;Sci. Géol. Bull.,1985