Jauregui, D. V., White, K. R., Woodward, C. B., Leitch, K. R. (2003), “Noncontact Photogrammetric Measurement of Vertical Bridge Deflection”, Journal of Bridge Engineering, ASCE, Vol. 8, No. 4, pp. 212-222.

Setia, A. (2010) “Photogrammetry for Non-Contact Measurement of Deflection”, Department of Civil Engineering, IIT Delhi. click here

For manual click here