Bernhard A.E., Tucker J., Giblin A.E., Stahl D.A..  2007.  Functionally distinct communities of ammonia-oxidizing bacteria along an estuarine salinity gradient. Environmental Microbiology. 9:1439-1447.

Bernhard A., Donn T.M., Giblin A.E., Stahl D.A..  2005.  Loss of Diversity of Ammonia-Oxidizing Bacteria Correlates with Increasing Salinity in an Estuary System.. Environmental Microbiology. 7:1289-1297.

Nielsen J.L., Schramm A., Bernhard A.E., EnghG.J. vanden, Stahl D.A..  2004.  Flow Cytometry-Assisted Cloning of Specific Sequence Motifs from Complex 16S rRNA Gene Libraries. Applied and Environmental Microbiology. 70:7550-7554.