Yaneva, Galina, Tsonka Dimitrova, Stoyan Stoyanov, Nikoleta Ivanova, Galina Nenkova, Dobri Ivanov, and Ivayla Kuleva. 2023. “Therapeutic Challenges in Quadruple Negative Breast Cancer”. Journal of BioScience and Biotechnology 11 (2):77-81. https://editorial.uni-plovdiv.bg/index.php/JBB/article/view/437.