@article{MET_1987__34_176116,
     author = {H. Nyquist},
     title = {Robust {Estimation} of the {Structural} {Errors-in-Variables} {Model.}},
     journal = {Metrika},
     pages = {177--183},
     publisher = {mathdoc},
     volume = {34},
     year = {1987},
     zbl = {0622.62041},
     url = {http://geodesic.mathdoc.fr/item/MET_1987__34_176116/}
}