 In collaboration with Gábor Bohus, they contributed significantly to the clarification of the taxonomy of "Agaricus" mushrooms in Europe.In this genus belong one of the most widely produced mushroom, "Agaricus bisporus", the button mushroom.They also performed extensive experiments on establishing cultivation protocols for additional "Agaricus" species, such as "Agaricus macrosporus" and "A. macrosporoides".