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Wolfgang Zarges; Michael Marsch; Klaus Harms; Friederike Haller; Gernot Frenking; Gernot Boche. (1991). [(C2H5O)2P(O)CHPhLi·N(CH2CH2)3N]∞: Festkörperstruktur, Aggregation in THF-Lösung und Modellrechnungen zur Struktur eines Wadsworth-Horner-Emmons-Reagenzes. , 124(4), 861–866. doi:10.1002/cber.19911240428 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research