Chauhan A, Chauhan V. Oxidative stress in autism. Pathophysiology. 2006 Aug;13(3):171-81. Epub 2006 Jun 12. https://www.ncbi.nlm.nih.gov/pubmed/16766163
This is a review article, summarizing the research to date on oxidative stress in autism and some implications for The conclusion:
Preliminary results of some of clinical trials have suggested improved behavior in individuals with autism who receive antioxidant therapy.
Does this paper "demonstrate that vaccines can cause autism"? No.