1. Anonymous. 1895. Review ofThe Book of the Rose andThe Rose-Garden. Quart. Rev. 182: 110-125.
2. Astadjov, N. S. 1975a. Studies on the clones from the population of Kazanlik Rose (Rosa damascenaMiller). Rivista Italiana Essenza, Profumi, Piante Officinali, Olii Vegetali, Saponi 57: 623–626.
3. —. 1975b. A new variety of the Kazanlik oil-bearing rose, Iskra. Rasteniev. Nauki 12: 59–63.
4. Balinova-Tsevtkova, Y. M., and R. Atanassova. 1974. A method for determination of rose oil composition in a single flower of the Kazanlik rose. Dokl. Sel’skokhoz. Akad. Sofia 7: 45–48.
5. Becker, H. F. 1963. The fossil record of the genusRosa. Bull. Torrey Bot. Club 90: 99–110.