2WILLUMSEN L G.Simplified transport models based on traffic counts[J].Transportation,1981,10(2):257-278.
3ENNIN C.Estimation of trip matrices from traffic counts and survey data:a generalized least squares estimator[J].Transportation Reserch,1984,18B(4/5):289-299.
4HERNZ S.A maximum likelihood model for estimating O-D matrices[J].Transportation Reserch,1987,21B(5):395-412.
