Please capitalize where necessary: when in 1960 steinhaus was writing about banach he emphasised this fact (nauka polska 8 (4) (1960), 157 or wiadom. mat. 4 (1961), 257 or , 242):
When in 1960 Steinhaus was writing about Banach he emphasised this fact (Nauka Polska 8 (4) (1960), 157 or Wiadom. Mat. 4 (1961), 257 or , 242):