Van Der Graaf, ShenjaShenjaVan Der GraafBallon, PieterPieterBallon2021-10-272021-10-2720190040-1625https://imec-publications.be/handle/20.500.12860/34199Journal articlehttps://www.sciencedirect.com/science/article/pii/S0040162517318528?via%3Dihub