Volumetric Properties at High Pressures of the Nucleosides Inosine, 2′-Deoxyinosine, and 2′-Deoxyguanosine and the Volumetric Properties of Guanosine Derived Using Group Additivity Methods Hedwig, G.R.; Jameson, G.B.; Høiland, H.; Journal of Chemical & Engineering Data 2014, 59, 3593-3604