Yordanova, Mariana Zhivkova. “Researching the Possibilities and Attitudes Towards Expanding the Professional Competences of Radiographers in North-Eastern Bulgaria”. Journal of Advanced Research in Medical and Health Science (ISSN 2208-2425), vol. 4, no. 9, Sept. 2018, pp. 75-79, https://doi.org/10.53555/nnmhs.v4i9.605.