Attested of Faculty of Agriculture, University of Zagreb, Croatia.
Registered at Republic Committee for Agriculture and Forestry Zagreb, 320-12/88-01/16, Reg. No.: 525-02-88-1.
Registered at Croatian Ministry of Agruculture and Forestry UP/I-320-11/94-01/38, Reg. No.: 525-02-94-2.
Attested and registered ad Austrian Ministry of Agriculture, BGBI, Nr. 488/1985, Reg.No.: 2252/1990.