[tdwg-content] Best practice for scientificNameAuthorship?

Dear experts.

What is the best practice for the DwC scientificNameAuthorship when there is a specific epithet author as well as infraspecific epithet author in a scientific name? Both names concatenated by some character? Only the infraspecific epithet author? Both pieces of information would go into DwC scientificname, but I'm looking for how users would use scientificNameAuthorship and what is useful to have there.

Thank you, --am