Cavinato, G., and L. Toniolo. “Metals in Organic Syntheses. II. The Effect of Molecular Hydrogen on the Highly Regioselective Hydrocarboxylation of Propene Promoted by a [PdCl2(PPh3)2]-PPh3 Catalyst Precursor”. CHIMIA, vol. 33, no. 8, Aug. 1979, p. 286, https://doi.org/10.2533/chimia.1979.286.