FRÁGNER P., MÚČKA V. (1966): Rubronigrin, new antibiotic substance from Trichophyton rubrum var. nigricans. Česká Mykologie 20(3): 182-183 [published: 1966]
FRÁGNER P. (1966): Trichophyton rubrum (Cast.) Sabouraud var. nigricans var. nova. Česká Mykologie 20(1): 27-28 [published: 1966]
FRAGNER P. (1981): Further experience with Castellani’s „Water cultures“. Česká Mykologie 35(3): 161-164 [published: 1981]
BUCHNÍČEK J. (1976): Growth inhibition in Dermatophytes by light. Česká Mykologie 30(1): 41-48 [published: 1976]
HERINK J. (1973): Dr. Petr Fragner quinquagenarius. Česká Mykologie 27(4): 241-247 [published: 1973]
FRAGNER P., MÚČKA V. (1969): Experiments on the separation and identification of „Rubronigrin“. Česká Mykologie 23(2): 127-128 [published: 1969]