%0 Journal Article %A G Bender %A M Carmo %A T Smolinka %A A Gago %A Nemanja Danilovic %A M Mueller %A F Ganci %A A Fallisch %A P Lettenmeier %A K.A Friedrich %A K Ayers %A B Pivovar %A J Mergel %A D Stolten %B International Journal of Hydrogen Energy %D 2019 %G eng %N 18 %P 9174 - 9187 %R 10.1016/j.ijhydene.2019.02.074 %T Initial approaches in benchmarking and round robin testing for proton exchange membrane water electrolyzers %V 44 %8 04/2019 %! International Journal of Hydrogen Energy