Temperature and pressure correlation for volume of gas hydrates with crystal structures sI and sII Václav Vinš, Andreas Jäger, Sebastian Hielscher, Roland Span, Jan Hrubý and Cornelia Breitkopf EPJ Web Conf., 143 (2017) 02141 Published online: 12 May 2017 DOI: 10.1051/epjconf/201714302141