Stone RP, Wright SA, Drake F, Muñoz M, Treffers R, Werthimer D (). „Lick Observatory Optical SETI: targeted search and new directions”. Astrobiology. 5 (5): 604–11. doi:10.1089/ast.2005.5.604. PMID16225433.Mentenanță CS1: Nume multiple: lista autorilor (link)
Stone RP, Wright SA, Drake F, Muñoz M, Treffers R, Werthimer D (). „Lick Observatory Optical SETI: targeted search and new directions”. Astrobiology. 5 (5): 604–11. doi:10.1089/ast.2005.5.604. PMID16225433.Mentenanță CS1: Nume multiple: lista autorilor (link)