• Applied biocatalysis in Tallinn Technical UniversityKreen, MalleBiobalt : Workshop Future of Biotechnology : 26-27 April 1993 : newsletter1993 / p. [2]
• From Tallinn to LohusaluArumaa, HelgiBiobalt : Workshop Future of Biotechnology : 26-27 April 1993 : newsletter1993 / p. [3]
• Welcome to Biobalt!Köstner, AdoBiobalt : Workshop Future of Biotechnology : 26-27 April 1993 : newsletter1993 / p. [1]