, Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 24, 1113 Sofia, Bulgaria

• Acta Geologica Polonica Vol. 63 No. 2 (2013) - Articles
  Towards a standard Tithonian to Valanginian calpionellid zonation of the Tethyan Realm
  Abstract  PDF
• Acta Geologica Polonica Vol. 59 No. 2 (2009) - Articles
  New conodont and palynological data from the Lower Palaeozoic in Northern Çamdağ, NW Anatolia, Turkey
  Abstract  PDF