Inhalers and nebulizers: basic principles and preliminary measurements Ondrej Misik, Frantisek Lizal, Vahid Farhikhteh Asl, Miloslav Belka, Jan Jedelsky, Jakub Elcner and Miroslav Jicha EPJ Web Conf., 180 (2018) 02068 Published online: 04 June 2018 DOI: 10.1051/epjconf/201818002068