= Publication by Marie Curie
God, how terrible the current systems are! E.g. looking for the <Polonium> publication from 1898 and can't find it easily! Presumably would be in the <Comptes rendus de l'Académie des Sciences> 1898. There are two per year, and from searches would be tome 127. Finally found at: https://archive.org/details/ComptesRendusAcademieDesSciences0127/page/n5/mode/2up
A decent manual list of publications from the <Comptes rendus de l'Académie des Sciences>: https://comptes-rendus.academie-sciences.fr/page/marie-skodowska-curie_fr/ They group <Marie Curie's Polonium paper> and <Marie Curie's Radium paper> together without giving the title of the second one though, but the page is given.