@article{Ramesh_Raghunandan_Ramakrishnan_2013, title={Zero Crossing Edge Detection and Contour Tracing for Segmentation of Cervical Cell Nucleus .}, volume={43}, url={https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/4225}, DOI={10.14429/dsj.43.4225}, number={3}, journal={Defence Science Journal}, author={Ramesh, B.V. and Raghunandan, S. and Ramakrishnan, K.R.}, year={2013}, month={Jan.}, pages={223-228} }