- Wiley Online Library
- Wiley Online Library
- Wiley Online Library
- Wiley Online Library
- Wiley Online Library
- Wiley Online Library
- University of Lincoln
- SlideBoom
- SelectedWorks
- roar@UEL - University of East London
- Philsci-Archive
- Philsci-Archive
- Philsci
- Philsci
- Philsci
- Overview of land plant phylogeny (more detail)
- NERC Open Research Archive
- Munich Personal RePEc Archive
- mrsolson.com
- mrsolson.com
