bibref as optional child of nomenclature-citation
tcatapano opened this issue · comments
per https://github.com/plazi/EJT-testbed/issues/528
make the bib citation child of nomenclature citation optional as it may be a child of the child taxon-name. This can be validated with schematron: must have a descendant bibref
mixed-citation in nomenclature-citation ought to be sufficient. Closing.