Željko Heimer held a lecture for the Society of the Zagreb Classical Gymnasium on 21 March 2016. The lecture covered topics on transformation of historical coats of arms of countires, cities and communities gaining their modern design, on their designers, on increased number of figures and attributes of siants in the modern municipal arms in the Republic of Croatia and other actual issues.
Hrvatsko grboslovno i zastavoslovno društvo
Croatian Heraldic and Vexillological Association
Hrvatsko grboslovno i zastavoslovno društvo je član međunarodnih udruga | The Croatian Heraldic and Vexillological Association is a member of
 FIAV | Međunarodna federacija veksiloloških udrugaInternational Federation of Vexillological AssociationsLa Fédération Internationale des Associations Vexillologiques | & | Međunarodna genealoška i heraldička konfederacijaInternational Confederation of Genealogy and HeraldryLa Confédération Internationale de Généalogie et d'Héraldique |  CIGH |
HGZD 
2006
2006