J. A. Awan, M. R. Usman, R. U. Khan, and D. Richon, “Electrical Conductivity of n-Propyl mercaptan (n-PM) in N- Methyldiethanolamine (MDEA) Aqueous Solutions at 303K”, JPIChE, vol. 39, no. 1, pp. 29–33, Sep. 2011.