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| 2011 | ||
|---|---|---|
| 2 | Shubo Chen: On the Absolute Sum of Chromatic Polynomial Coefficient of Graphs. Int. J. Math. Mathematical Sciences 2011: (2011) | |
| 2008 | ||
| 1 | Lixing Xu, Shubo Chen: The PI Index of polyomino chains. Appl. Math. Lett. 21(11): 1101-1104 (2008) | |
| 1 | Lixing Xu | [1] |
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