Villafañe

Chubut river estuary ( argentina ) : estuarine variability under different conditions of river discharge

E. Helbling, Villafañe, J. Santamarina, 1992 .

The occurrence of the symbiont richelia in rhizosolenia and hemiaulus in the north pacific

Villafañe, W. Helbling, Ferrario Me, 1995 .