F. J. Sikora

Ammonium and nitrate removal in vegetated and unvegetated gravel bed microcosm wetlands

Zhu Tong, F. J. Sikora, 1995 .

Approach for Estimating Yield Response to Nitrogen Based on Nitrogen-Rate Requirement Parameters

R. M. Cruse, R. F. Follett, B. R. Bock, 1991 .