Al- Taee, Nihal E., et al. “Heat Shock Enhanced Nucleic Acids, Proteins Content and Specific Activity of Thymine Nucleotide Biosynthetic Enzymes in Stem Callus of Sesamum Indicum L”. Journal of Biotechnology Research Center (JOBRC), vol. 7, no. 2, June 2013, pp. 47-56, doi:10.24126/jobrc.2013.7.2.266.