Popov, Ts., et al. “Serum Levels of Semaphorin 4C in Breast Cancer – Assessment of Prognostic Value and Potential for Monitoring Surgical Treatment Response”. Acta Medica Bulgarica, vol. 51, no. 4, Nov. 2024, pp. 1-7, https://doi.org/10.2478/AMB-2024-0070.