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2. Nonsymmetric distances and their associated withpologies: About the origins of basic ideas in the area of asymmetric topology;Künzi,2001
3. Weighted quasi-metrics;Künzi,1994
4. Quasi-Metric Spaces, Quasi-Metric Hyperspaces and Uniform Local Compactness;Künzi;Rend. Istit. Mat. Univ. Trieste Suppl.,1999
5. On the structure of the dual complexity space: The general case;Romaguera;Extracta Math.,1998