[1]
Y. Bhoon, K. Pandeya, and R. Singh, “1-(2-Pyridylazo)-2-Phenanthrol (PAP) as an Extractive Chromogenic Reagent for Platinum(IV)”, Chimia, vol. 28, no. 11, p. 659, Nov. 1974, doi: 10.2533/chimia.1974.659.