Comment on "On the Electric Charge Quantization from the Aharonov-Bohm   Potential"
  In the paper quant-ph/0503212, Barone and Halayel-Neto (BH) claim that charge quantization in quantum mechanics can be proven without the need for the existence of magnetic monopoles. In this paper it is argued that their claim is untrue. 
R. MacKenzie, H. Paquette, J. Pinel, P.-L. Roussel