1. H.M. Goertz, R.J. Timmons, G.R. McVey, inventors; The O. M. Scott & Sons Company, assignee. Sulfur coated fertilizers and process for the preparation thereof. USA patent US005219465A. 1993 Jun.15.
2. Sulfur coating of urea in shallow spouted beds;Choi;Chemical Engineering Science,1997
3. Sulfur in coatings and structural materials;Sullivan,1975
4. A new approach to sulfur concrete;Gregor,1978
5. Dicyclopentadiene-modified sulphur and its use as a binder, quoting sulphur concrete as an example;Diehl,1976