An assessment of irrigated rice cultivation with different crop establishment practices in Vietnam oleh Van-Hung Nguyen, Alexander M. Stuart, Thi-My-Phung Nguyen, Thi-Minh-Hieu Pham, Ngoc-Phuong-Thanh Nguyen, Anny Ruth P. Pame, Bjoern Ole Sander, Martin Gummert, Grant Robert Singleton