Sumelius, John; Grgic, Zoran; Mesic, Milan; Franic, Ramona(Sustainable Agriculture in Central and Eastern European Countries (CEESA), Berlin, Germany, 2002)
Myers, Tommy E.; Gibson, Anthony C.; Dardeau, Elba A.; Schroeder, Paul R.; Stark, Timothy D.(US Army Corps of Engineers, Waterways Experiment Station, Norfolk, VA, 1993)