ty -jour au -Lefebvre,Mario PY -2002 DA -1900/01/01 TI-建模和预测河流SP -452183 VL -8 AB -8 AB -SN -1024-123X UR -https -https:// https:// doi。org/10.1080/1024123021000061935 do -10.1080/1024123021000061935 JF-工程PB中的数学问题 - Hindawi Publishing Corporation KW- ER- ER-