Methods for measuring of the energy use from equipment for commercial kitchens – Part 1: Convection steamers
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/2012

Methods for measuring of the energy use from equipment for commercial kitchens – Part 1: Convection steamers
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2010