Flachsmeyer, J., Poppe, H., & Terpe F. (1969). Contributions to extension theory of topological structures: Proceedings of the symposium held in Berlin, August 14-19, 1967. Deutscher Verlag der Wissenschaften VEB.
শিকাগো স্টাইলে সাইটেশনFlachsmeyer, J., H. Poppe, এবং Terpe F. Contributions to Extension Theory of Topological Structures: Proceedings of the Symposium Held in Berlin, August 14-19, 1967. Berlin: Deutscher Verlag der Wissenschaften VEB, 1969.
এমএলএ সাইটেশনFlachsmeyer, J., et al. Contributions to Extension Theory of Topological Structures: Proceedings of the Symposium Held in Berlin, August 14-19, 1967. Deutscher Verlag der Wissenschaften VEB, 1969.
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