1. L.F. Warren, in: R.E. Alfred, R.J. Martinez, K.B. Wischman (Eds.), Electronic material-our future, Proceedings of the Fourth International Sample Electronic Conferences, Vol. 4, Society for the Advancement of Material and Process Engineering, Covina, CA, 1990, p. 388.
2. P.R. Newman, L.F. Warren, P. Cunnigham, T.Y. Chung, D.E. Copper, G.L. Burdge, Polak Dingels, C.K. Lowe-Ma, in: C.Y. Chiang, P.M. Chaikan D.O. Cowan (Eds.), Advanced Organic Solid State Materials, Materials Research Society Symposium Proceedings, Materials Research Society, col.173, Pittsburg, PA, 1990, p. 557.
3. Raman and Infrared Spectra of Bis(Thiourea)Zinc Chloride Zn[CS(NH2)2]2Cl2 Single Crystal
4. Second-harmonic generation in zinc tris(thiourea) sulfate