Crippa, V. E. L.; Hahn, N. S.; Fugi, R. <b>Food Resource Used by Small-Sized Fish in Macrophyte Patches in Ponds of the Upper Paraná River floodplain</b&gt; - DOI: 10.4025/actascibiolsci.V31i2.3266. Acta Sci. Biol. Sci. 2009, 31, 119-125.