%0 Journal Article %A J. Wójcik %T A refinement of a theorem of Schur on primes in arithmetic progressions III %J Acta Arithmetica %D 1968 %P 193-197 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-15-2-193-197/ %R 10.4064/aa-15-2-193-197 %G en %F 10_4064_aa_15_2_193_197