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Author: Gutman, Ivan

• Simić, Slobodan; Gutman, Ivan; Baltić, Vladimir: Some graphs with extremal Szeged index. (English). Mathematica Slovaca, vol. 50 (2000), issue 1, pp. 1-15
• Gutman, Ivan; Yeh, Yeong-Nan: The sum of all distances in bipartite graphs. (English). Mathematica Slovaca, vol. 45 (1995), issue 4, pp. 327-334