1. Yilmaz, E., Kilikçier, C.: Determination of Fetal State from Cardiotocogram using LS-SVM with Particle Swarm Optimization and Binary Decision Tree. J. Comp. Math. Methods in Med. 2013, 1–8 (2013)
2. Dawes, G.S., Visser, G.H., Goodman, J.D., Redman, C.W.: Numerical analysis of the human fetal heart rate: the quality of ultrasound records. Am. J. Obstet. Gynecol. 141(1), 43–52 (1981)
3. Magenes, G., et al.: Improving the fetal cardiotocographic monitoring by advanced signal processing. In: 25th IEEE Annual International Conference of Engineering in Medicine and Biology Society, vol. 3, pp. 2295–2298. IEEE Press, Italy (2003)
4. Alonso-Betanzos, A., Guijarro-Berdiñas, B., Moret-Bonillo, V., López-Gonzalez, S.: The NST-EXPERT project: the need to evolve. J. Artif. Intell. Med. 7(4), 297–313 (1995)
5. Guijarro-Berdiñas, B., Alonso-Betanzos, A.: Empirical Evaluation of a Hybrid Intelligent Monitoring System using Different Measures of Effectiveness. J. Artif. Intell. Med. 24(1), 1–96 (2002)