APA

Stevenson, B. (1972). Carbonium ion intermediates in the tetracyclo [4,3.0.0²[superscript ,]⁴.0³[superscript ,]⁷] and tetracyclo [4.3.0.0²[superscript ,]⁴.0³[superscript ,]⁸] - nonane ring systems. : Oregon State University.