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Beckhaus, Hans-Dieter; Ruechardt, Christoph; Lagerwall, Dean R.; Paquette, Leo A.; Wahl, Fabian; Prinzbach, Horst, Experimental Enthalpies of Formation and Strain Energies for the Caged C20H20 Pagodane and Dodecahedrane Frameworks, J. Am. Chem. Soc., 1994, 116, 26, 11775-11778, https://doi.org/10.1021/ja00105a018 . [all data]