| Type | Article |
| Authors(s) | Reid JD, Plunkett GM, Peters GA. |
| Year | 2006 |
| Title | Phylogenetic relationships in the heterosporous fern genus Azolla (Azollaceae) based on DNA sequence data from three noncoding regions. |
| Periodical | International Journal of Plant Sciences |
| Volume | 167 |
| Page(s) | 529–538 |