NLM 3.0 meta-data Contributes NLM 3.0 schemas and application adapters. NLM 3.0 Citation Adapter Extracts/injects meta-data from/into citations. Citation Extraction Services" Convert a plain text citation into NLM 3.0 element-citation mark-up." Citation Database Services" Improve NLM 3.0 element-citation mark-up, e.g. by looking up citations in external databases." Citation Output Services Convert NLM 3.0 element-citation mark-up into a plain-text citation output standard. Citation Output Services (XML) Convert NLM 3.0 element-citation mark-up into an XML citation output standard. NLM 3.0 Journal Publishing Output Convert an OJS or OCS article/paper into NLM 3.0. NLM 2.3 Journal Publishing Output Convert an OJS or OCS article/paper into NLM 2.3. NLM 3.0 to 2.3 Journal Publishing Downgrade Downgrades NLM 3.0 to NLM 2.3. Plain text reference list generation Generate a formatted plain text reference list from an OJS/OCS/OMP submission's references