Islam, M. M., T. Akter, A. S. Mohammad, S. Islam, F. Alam, U. Goswami, S. U. Al-Azad, and S. Selim. “Ultrasonographic Evaluation of Foetal Binocular Distance in Second & Third Trimester of Pregnancy and Correlation With Gestation Age”. Journal of Current and Advance Medical Research, vol. 3, no. 1, Aug. 2016, pp. 10-15, doi:10.3329/jcamr.v3i1.29360.