Griesinger, C. Department of NMR Based Structural Biology, MPI for biophysical chemistry, Max Planck Society;
Bolte, M., Griesinger, C., & Sakhaii, P. (2001). Pyridinium methylsulfonate: a pseudosymmetric structure. Acta Crystallographica E, 57, 458-460. Retrieved from http://www.google.de/url?sa=t&source=web&cd=2&ved=0CCAQFjAB&url=http%3A%2F%2Fjournals.iucr.org%2Fe%2Fissues%2F2001%2F05%2F00%2Fci6022%2Fci6022.pdf&rct=j&q=Pyridinium%20methylsulfonate%3A%20a%20pseudosymmetric%20structure.&ei=y7nrTNjvLIbtOZTRhIwB&usg=AFQjCNGqdwxL0UvNGUkQ20Ay9E2Vtt5sWA&cad=rja.