1. Brandenberg, K. & Putz, H. (2004). DIAMOND. Crystal Impact GbR, Bonn, Germany.
2. Bruker (2004). SAINT-Plus (including XPREP) and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
3. Bruker (2005). APEX2. Bruker AXS Inc., Madison, Wisconsin, USA.
4. Porphyrin sponges: conservative of host structure in over 200 porphyrin-based lattice clathrates