Cunha V R R, Izumi C M S, Petersen P A D, ães ér, Temperini M L A, Petrilli H M, Constantino V R-L.  2014.  Mefenamic Acid Anti-inflammatory Drug: Probing its Polymorphs by Vibrational (IR and Raman) and Solid-state NMR Spectroscopies. The Journal of Physical Chemistry B. :140324004349006.