Associações Europeias de Hidrogénio   European Hydrogen Association (EHA) www.h2euro.org     Association Française de L’Hydrogène www.afh2.org     Asociación Española del Hidrógeno www.aeh2.org     Norwegian Hydrogen Forum www.hydrogen.no     Swedish Hydrogen Forum www.h2forum.org     Deutscher Wasserstoff Verband (DWV) www.dwv-info.de     Forum Italiano dell'idrogeno www.h2forum.it Outras Associações Internacionais   Canadian Hydrogen Association www.h2.ca     NHA - National Hydrogen Association www.hydrogenus.com     California Fuel Cell Partnership www.drivingthefuture.org     American Hydrogen Association www.clean-air.org     China Association for Hydrogen www.chinahydrogen.org     WE-NET (Japão) www.enaa.or.jp/WE-NET/     National Hydrogen Association of Australia www.hydrogen.org.au Informação sobre Hidrogénio e Pilhas de Combustível   Fuel Cell Park - Fuel Cell Innovation Park www.fuelcellpark.com     HyWeb – The Hydrogen and Fuel Cell Information System in the Internet www.hyweb.de     Fuel Cell Today www.fuelcelltoday.com     H2 Data – Hydrogen Data www.h2data.de     H2 Cars – Hydrogen Cars and Filling Stations www.h2cars.de     Fuel Cells 2000 – The online fuel cell information resource www.fuelcells.org     Ballard www.ballard.com     Shell Hydrogen Website www.shellhydrogen.com     Japan Hydrogen & Fuel Cell Demonstration Project (JHFC) www.jhfc.jp     General Motors Corp. www.gm.com     Fuel Cell Bus Club www.fuel-cell-bus-club.com     The Hydrogen and Fuel Cell Letter www.hfcletter.com     Hynet - The European Thematic Network on Hydrogen www.hynet.info     L-B-Systemtechnik GmbH www.lbst.de     Clean Energy Partnership (CEP) www.cep-berlin.de Diversos   Agência Portuguesa do Ambiente www.apambiente.pt     Associação Portuguesa do Veículo Eléctrico www.apve.pt     Associação Portuguesa do Veículo a Gás Natural www.apvgn.pt     Direcção-Geral de Transportes Terrestres www.dgtt.pt     Direcção Geral de Geologia e Energia www.dgge.pt     Managenergy www.managenergy.net     Portal das Energias Renováveis www.energiasrenovaveis.com