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B. KRAEUTLER; J. MAYNOLLO. (1996). ChemInform Abstract: Diels-Alder Reactions of the (60)Fullerene. Functionalizing a Carbon Sphere with Flexibly and with Rigidly Bound Addends.<span></span>. , 27(29), 0–0. doi:10.1002/chin.199629117 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research