1. Faculty of Civil Engineering, Thuyloi University, 175 Tay Son, Dong Da, Hanoi 10000, Vietnam
2. Hai Phong Department of Agriculture and Rural Development, 5 Chieu Hoa, Kien An, Hai Phong
3. Institute of Civil Engineering, Thuyloi University, 175 Tay Son, Dong Da, Hanoi 10000, Vietnam