Quantifying the classification of exoplanets: in search for the right habitability metricMargarita Safonova, Archana Mathur, Suryoday Basak, Kakoli Bora and Surbhi AgrawalEur. Phys. J. Spec. Top., 230 10 (2021) 2207-2220DOI: https://doi.org/10.1140/epjs/s11734-021-00211-z