J. Barke

The Eocene Arctic Azolla bloom: environmental conditions, productivity and carbon drawdown

A. Lotter, J. S. Sinninghe Damsté, G. Reichart, 2009, Geobiology.

Did a single species of Eocene Azolla spread from the Arctic Basin to the southern North Sea

H. Brinkhuis, M. Collinson, J. V. K. Cittert, 2010 .

Coeval Eocene blooms of the freshwater fern Azolla in and around Arctic and Nordic seas

A. Lotter, G. Reichart, E. Speelman, 2012 .

Orbitally forced Azolla blooms and Middle Eocene Arctic hydrology: Clues from palynology

A. Lotter, G. Reichart, D. Greenwood, 2011 .

New Observations and Synthesis of Paleogene Heterosporous Water Ferns

F. Marone, D. Batten, Johanna H. A. van Konijnenburg-van Cittert, 2013, International Journal of Plant Sciences.

The freshwater fern Azolla (Azollaceae) from Eocene Arctic and Nordic Sea sediments: New species and their stratigraphic distribution

H. Brinkhuis, M. Collinson, J. V. K. Cittert, 2013 .

A new species of the freshwater fern Azolla (Azollaceae) from the Eocene Arctic Ocean

M. Collinson, J. V. K. Cittert, J. Burgh, 2009 .

Uptake of intact nucleoside monophosphates by Bdellovibrio bacteriovorus 109J

E. Ruby, J. Barke, J. McCabe, 1985, Journal of bacteriology.