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"Lower bounds for Estrada index and Laplacian Estrada index."
Hamidreza Bamdad, Firouzeh Ashraf, Ivan Gutman (2010)
- Hamidreza Bamdad, Firouzeh Ashraf, Ivan Gutman:
Lower bounds for Estrada index and Laplacian Estrada index. Appl. Math. Lett. 23(7): 739-742 (2010)
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