Thermal elimination of isobutene from meta and para tert-di-butyl pyromellitic acid - Johnson, C.; Xu, Huizhu; Wunder, S. L.; Houlihan, F. M.; Chin, E. (Wiley-Blackwell, 1992)
http://dx.doi.org/10.1002/polb.1992.090301212
Keywords: V; U