@article{econhot_econhot-cited-c69fddc86d591bea, title = {Semiparametric least squares (SLS) and weighted SLS estimation of single-index models}, author = {Hidehiko Ichimura}, journal = {Journal of Econometrics}, year = {1993}, volume = {58}, number = {1-2}, pages = {71-120}, doi = {10.1016/0304-4076(93)90114-k}, url = {https://doi.org/10.1016/0304-4076(93)90114-k} }