Brennan, Síle Brauner, Christian Davis, Dennis De Backer, Natalie Dyck, Alexander García-Hernández, César Gaathaug, André Vagner Kupka, Petr Grand-Clement, Laurence Havret, Etienne Houssin, Deborah Lecomte, Laurent Maranne, Eric Steele, Pippa Russo, Paola Pinilla, Adolfo Schoepf, Gerhard Van Esbroeck, Tom Molkov, Vladimir European hydrogen train the trainer programme for responders: The impact of HyResponder on training across Europe Int. j. hydrogen energy 10.1016/j.ijhydene.2025.01.440 2025 2025