The INA is a card file and online reporting system maintained at the Silva Center for Phycological Documentation of the University Herbarium, University of California, Berkeley. It contains nearly 200,000 names of algae (in the broad sense).
The BPU is a card file containing bibliographic references pertaining to algal taxonomy.
Bibliographia Phycologica Universalis
BLANCO, Saul, Luc ECTOR, & Eloy BÉCARES
2004
Epiphytic diatoms as water quality indicators in Spanish shallow lakes
Vie et Milieu / Life & Environment
53(2/3): 71-79, 4 figs., 1 table