D. C. Gupta, P. K. Gutch, G. Lal, K. D. Vyas, and D. K. Jaiswal, “Fluorinated Epoxy Resins-based Sorbent Coating Materials for Quartz Piezoelectric Crystal Detector”, Def. Sc. J., vol. 54, no. 2, pp. 229–234, Apr. 2004.