Janssen, Ted, Gervais Chapuis, and Marc de Boissieu. "STRUCTURE." Aperiodic Crystals: From Modulated Phases to Quasicrystals. : Oxford University Press, 2007-05-01. Oxford Scholarship Online. 2007-09-01. Date Accessed 18 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198567776.001.0001/acprof-9780198567776-chapter-4>.
Janssen, T., Chapuis, G., & de Boissieu, M.(2007-05-01). STRUCTURE. In Aperiodic Crystals: From Modulated Phases to Quasicrystals. : Oxford University Press. Retrieved 18 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198567776.001.0001/acprof-9780198567776-chapter-4.
Janssen, Ted, Gervais Chapuis, and Marc de Boissieu. "STRUCTURE." In Aperiodic Crystals: From Modulated Phases to Quasicrystals. : Oxford University Press, 2007-05-01. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198567776.001.0001/acprof-9780198567776-chapter-4.
Janssen T, Chapuis G, de Boissieu M. STRUCTURE. In: Janssen T, Chapuis G, de Boissieu M. Aperiodic Crystals: From Modulated Phases to Quasicrystals. Oxford University Press; 2007. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198567776.001.0001/acprof-9780198567776-chapter-4. Accessed June 18, 2013.