Three-nucleon bound state calculations using the three dimensional formalism Kacper Topolnicki, Jacek Golak, Roman Skibiński, Henryk Witała, Yuriy Volkotrub, Volodymyr Soloviov and Alessandro Grassi EPJ Web Conf., 199 (2019) 05021 Published online: 01 February 2019 DOI: 10.1051/epjconf/201919905021