Zetero
Better BibTeX is a great tool to export BibTeX-files from Zetero. A tip to get even cleaner BibTeX-files is to add the following postscript code.
if (Translator.BetterBibTeX) {
if (reference.has.abstract) {
reference.remove('abstract');
}
if (reference.has.note) {
reference.remove('note');
}
if (reference.has.month) {
reference.remove('month');
}
if (reference.has.keywords) {
reference.remove('keywords');
}
if (reference.has.file) {
reference.remove('file');
}
if (item.arXiv.id) {
reference.add({name: 'arxivid', value: item.arXiv.id});
if (!reference.has.journal) {
reference.add({
name: 'journal',
bibtex: `{arXiv preprint: ${item.arXiv.id}}`
});
}
}
}