@article{055967296, title = "Studies on acquired radio-resistance of tumors. II. Nucleic acid changes in substrains of Ehrlich ascites carcinoma with increased radio-resistance", author = "Markov, G.G. and Tsanev, R.G.", year = "1961", journal = "Izvestiia. Bulletin. Bulgarska Akademiia Na Naukite. Institut Po Biologiia "metodii Popov"", volume = "11", pages = "313-327", url = "https://eurekamag.com/research/055/967/055967296.php" }