Culjat, Martin O.; Goldenberg, David; Tewari, Priyamvada; Singh, Rahul S. (2010). “A Review of Tissue Substitutes for Ultrasound Imaging”. Ultrasound in Medicine & Biology36 (6): 861–873. doi:10.1016/j.ultrasmedbio.2010.02.012. PMID20510184.
Culjat, Martin O.; Goldenberg, David; Tewari, Priyamvada; Singh, Rahul S. (2010). “A Review of Tissue Substitutes for Ultrasound Imaging”. Ultrasound in Medicine & Biology36 (6): 861–873. doi:10.1016/j.ultrasmedbio.2010.02.012. PMID20510184.