Gardner, R. W. (1994).Chemical intolerance: Physiological causes and effects and treatment modalities. Ann Arbor, MI: CRC Press.
Knivsberg, A. M., Reichelt, K. L., Nodland, M., & Hoien, T. (1995). Autistic syndromes and diet: A followup study.Scandinavian Journal of Educational Research, 39, 223–236.
O'Reilly, B. A., & Waring, R. H. (1993). Enzyme and sulphur oxidation deficiencies in autistic children with known food/chemical intolerances.Journal of Orthomolecular Medicine, 4, 198–200.
Reap, E. A., & Lawson, J. W. (1990). Stimulation of the immune response by dimethylglycine, a nontoxic metabolite.Journal of Laboratory Clinical Medicine, 115, 481–486.
Rimland, B. (1995). Studies of high dosage vitamin B6 in autistic children and adults-1965–1994. San Diego, CA: Autism Research Institute.
Shaw, W., Kassen, E., & Chaves, E. (1995). Increasing urinary excretion of analogs of Krebs cycle metabolite and arabinose in two brothers with autistic features.Clinical Chemistry, 41, 1094–1104.
Warren, R. P., Yonk, J., Burger, R. W., Odell, D., & Warren, W. L. (1995). DR-positive T cells in autism: Association with decreased plasma levels of the complement C4B protein.Neuropsychobiology, 2, 53–57.