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    Bounds on the Distance Energy and the Distance Estrada Index of Strongly Quotient Graphs
    (HINDAWI PUBLISHING CORPORATION, 2013) Bozkurt, S. Burcu; Adiga, Chandrashekara; Bozkurt, Durmus
    The notion of strongly quotient graph (SQG) was introduced by Adiga et al. (2007). In this paper, we obtain some better results for the distance energy and the distance Estrada index of any connected strongly quotient graph (CSQG) as well as some relations between the distance Estrada index and the distance energy. We also present some bounds for the distance energy and the distance Estrada index of CSQG whose diameter does not exceed two. Additionally, we show that our results improve most of the results obtained by Gungor and Bozkurt (2009) and Zaferani (2008).
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    On the Energy and Estrada Index of Strongly Quotient Graphs
    (Indian Nat Sci Acad, 2012) Bozkurt, S. Burcu; Adiga, Chandrashekara; Bozkurt, Durmuş
    In this paper, we consider the strongly quotient graphs and obtain some better results for the energy and Estrada index of these graphs, as well as some relations between Estrada index and the graph energy.