Acharya, Mohan, et al. “Comparative Advantage of Keyhole Right Flank Laparotomy and Ventral Midline Celiotomy for Ovariohysterectomy in Bitches”. International Journal of Applied Sciences and Biotechnology, vol. 4, no. 2, June 2016, pp. 198-02, doi:10.3126/ijasbt.v4i2.15098.