1. P. Barthe, G. Blanchard, France Patent 90 12 519 (1990), assigned to Rhone Poulenc Chimie.
2. P.R. Blum, M.A. Pepera, European Patent 518 548 (1992), assigned to Standard Oil Co.
3. Active specie on vanadium-containing catalysts for the selective oxidation of ethane to acetic acid
4. Oxidation of propane to acrylic acid on V2O5&$z.sbnd;P2O5-based catalysts