1. Pollack W. Glyoxalic acid, German Patent, 3 132 006; C.A. (1983) 98, 178748.
2. Oxidation of glyoxylic acid to oxalic acid by glycolic acid oxidase;Richardson;J. Biol. Chem.,1961
3. Biocatalytic production of glyoxylic acid;Seip;J. Org. Chem.,1993
4. Glyoxylic acid production using microbial transformant catalysts;Gavagan;J. Org. Chem.,1995
5. Gupta VR. Biotechnological Routes for the Synthesis of Fine Chemicals, M.Sc. (Tech.) (Bioprocess Technology) Thesis, University of Mumbai, June 1998.