VAMPOLA P. (1992): Oxyporus philadelphi, a new polypore of the Centraleuropean mycoflora. Česká Mykologie 45(4): 150-154 [published: 21st May, 1992]
POUZAR Z. (1967): Studies in the taxonomy of the Polypores. III. Česká Mykologie 21(4): 205-212 [published: 1967]