I. S. Akhrem, A. V. Orlinkov, M. E. Vol'pin, “Low-temperature functionalisation of alkanes and cycloalkanes by 'classical' and 'non-classical' (superacidic) Friedel–Crafts complexes”, Usp. Khim., 65:10 (1996), 920–935; Russian Chem. Reviews, 65:10 (1996), 849–863
A. V. Orlinkov, I. S. Akhrem, M. E. Vol'pin, “The structure of equimolar complexes of acyl halides with Lewis acids”, Usp. Khim., 60:5 (1991), 1049–1076; Russian Chem. Reviews, 60:5 (1991), 524–538