More specifically, the invention relates to a system for producing electrical power with {TAIL ~ a fuel cell}, {HEAD ~ especially a proton exchange membrane fuel cell}  
More specifically , the invention relates to a system for producing electrical power with { TAIL ~ a fuel cell } , { HEAD ~ especially a proton exchange membrane fuel cell }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH