Varsányi, G., Nagy, G. L. and Farkas , J. (1969) “HETEROGENOUS ISOTOPIC EXCHANGE AT THE INTERFACE OF STEEL SHEETS IN CONTACT WITH IRON CHLORIDE SOLUTIONS: II. EXPERIMENTS WITH IRON(III) CHLORIDE AND IRON(II) AMMONIUM SULFATE SOLUTIONS ”, Periodica Polytechnica Chemical Engineering, 13(4), pp. 297–316.