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Abdussakir, Abdussakir and Puspitasari, Lila Aryani and Irawan, Wahyu Henky and Alisah, Evawati (2019) Eccentric connectivity index of identity graph of cyclic group and finite commutative ring with unity. Journal of Physics: Conference Series, 1375 (01206). pp. 1-6. ISSN 1742-6588