@book{402658, title = {Po\v cet integr\'aln\'\i }, series = {GDML\_Books}, publisher = {Jednota \v ceskoslovensk\'ych mathematik\r u a fysik\r u}, address = {Praha}, year = {1931}, language = {cs}, url = {http://dml.mathdoc.fr/item/402658} }
Petr, Karel; Jarník, Vojtěch. Počet integrální. GDML_Books (1931), http://gdmltest.u-ga.fr/item/402658/