Paul G. Wenthold, Damodar Koirala, Arpad Somogyi and J. C. Poutsma. "Infrared spectroscopic confirmation of α-lactone formation in the dissociation of a gaseous amino acid" Journal of Physical Organic Chemistry Vol. 30 Iss. 2 (2017)
Available at: http://works.bepress.com/john-poutsma/8/