mod author_attribute_entries;
mod author_information;
mod author_line;
mod compound_author_name;
mod doctype;
mod header;
mod header_ref;
mod metadata;
mod multiple_authors;
mod reference_author_attributes;
mod reference_revision_attributes;
mod revision_attribute_entries;
mod revision_information;
mod revision_line;
mod subtitle;
mod title;
mod version_label;