ŠUTARA J. (2008): Xerocomus s. l. in the light of the present state of knowledge. Czech Mycology 60(1): 29-62 [published: 4th July, 2008]
ŠUTARA J. (2005): Central European genera of the Boletaceae and Suillaceae, with notes on their anatomical characters. Czech Mycology 57(1-2): 1-50 [published: 31st August, 2005]
HOLEC J. (1994): The ultrastructure of the spore wall and ornamentation in the Xerocomus group of Boletus. Czech Mycology 47(3): 173-184 [published: 17th June, 1994]