@article {cmorej_p1994:402, title = {Piagetovo ch{\'a}panie logicko-matematick{\'y}ch ent{\'\i}t}, journal = {Organon F}, volume = {1}, number = {4}, year = {1994}, pages = {334-353}, type = {Dial{\'o}gy}, url = {http://www.klemens.sav.sk/fiusav/doc/organon/1994/4/334-353.pdf}, author = {Cmorej, Pavel and Ryb{\'a}r, J{\'a}n} }