Yes, the Lycopodiaceae family has been the subject of extensive research, and the works by authors such as Wilhelm Herter, Ronald Wilce, and Bengt Øllgaard are well-regarded in the field of botany. If you're seeking access to literature by these or related authors, here are some ways to proceed:

1. Library and Institutional Access

• University Libraries: Many universities have subscriptions to botanical and taxonomic journals that may include works by these authors.
• Interlibrary Loan (ILL): If your institution doesn't have access, they can often obtain copies of specific articles or books from other libraries through ILL.

2. Digital Archives

• JSTOR: An extensive repository of scientific articles, including older botanical research.
• BioOne: Provides access to many biology and botany-focused journals.
• Biodiversity Heritage Library (BHL): Offers free access to older botanical literature, including taxonomic revisions and classic works.

3. ResearchGate

• Many researchers upload their publications to ResearchGate. You can create a free account and contact the authors directly for copies of their work.

4. Specific Authors

• Wilhelm Herter: Focused on Lycopodiaceae in the early 20th century; his works are often cited in historical botanical studies.
• Ronald Wilce: Known for studies on Lycopodiaceae, particularly in the mid to late 20th century.
• Bengt Øllgaard: A modern authority on Lycopodiaceae, known for comprehensive taxonomic revisions and biogeographical studies.

5. Key Publications

• Taxonomic Monographs: These are often found in botanical journals or as standalone books.
• Local Flora and Checklists: Regional floras (e.g., Neotropical or Palaeotropical) often incorporate contributions from these authors.

6. Contacting Experts

• If you're associated with a botany department, your professors or colleagues might have direct access to some of these works or can guide you.

7. Repositories and Botanical Institutions

• Institutions like the Royal Botanic Gardens, Kew, or the Missouri Botanical Garden may have these resources in their libraries.