Pornak, Miss. Vaishali R., and Dr. Nitin S. Nikhade. “Normative Value of Arch Index in Elderly- A Cross Sectional Study”. International Journal of Innovative Research in Medical Science, vol. 2, no. 01, Jan. 2017, p. 471 to 474, doi:10.23958/ijirms/vol02-i01/06.