A Simple Analytical Approximation for the Potential Energy of Diatomics. Dmitrieva, I K & Zenevich, V A Chemical Physics Letters, 96(2):228–231, 1983.
doi  bibtex   
@article{dmitrieva1983,
	title = {A {Simple} {Analytical} {Approximation} for the {Potential} {Energy} of {Diatomics}},
	volume = {96},
	doi = {10.1016/0009-2614(83)80496-5},
	number = {2},
	journal = {Chemical Physics Letters},
	author = {Dmitrieva, I K and Zenevich, V A},
	year = {1983},
	pages = {228--231},
}

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