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%Mathematics~Interdisciplinary~Research ~{\bf 1}~(201x) $xx - yy$\\} 
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\begin{document}
Topological indices are used in organic chemistry as effective
tools in QSAR\footnote{Quantitative Structure-Activity Relationship}, QSPR\footnote{Quantitative Structure-Property Relationship} and QSTR\footnote{Quantitative Structure-Toxicity Relationship} investigations

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