@ARTICLE{
author={Alex Liju,Gutman Ivan,Heidari Dariush,Rostami Mohammadreza},
year={2025},
title={On the square PI index of graphs},
journal={DISCRETE MATHEMATICS LETTERS},
volume={16},
number={},
pages={73-79},
document_type={Article},
} 

@ARTICLE{
author={Alex Liju,Gutman Ivan},
year={2025},
title={On the Inverse Mostar Index Problem for Molecular Graphs},
journal={TRANSACTIONS ON COMBINATORICS},
volume={14},
number={1},
pages={65-77},
document_type={Article},
} 

@ARTICLE{
author={Alex Liju,Gutman Ivan},
year={2025},
title={A note on Sombor indices of cacti},
journal={FILOMAT},
volume={39},
number={21},
pages={7439-7449},
document_type={Article},
} 

@ARTICLE{
author={Indulal Gopalapillai,Alex Liju,Gutman Ivan},
year={2021},
title={On graphs preserving PI index upon edge removal},
journal={JOURNAL OF MATHEMATICAL CHEMISTRY},
volume={59},
number={7},
pages={1603-1609},
document_type={Article},
}