1 Correction to: Economic Structures (2021) 10:12 https://doi.org/10.1186/s40008‑021‑00242‑8
The original version of this article (Flegg et al. 2021) unfortunately contained an error in the presentation of two equations. The correct versions are given in this erratum.
$$ \hat{a}_{ij}^{r} = \left\{ {\begin{array}{*{20}ll} {(\text{SLQ}_{i} )^{\alpha } a_{ij}^{n} (x_{j}^{r} /x_{j}^{n} )^{\beta} \qquad \qquad \qquad \qquad {\text{if}}\quad \text{SLQ}_{i} \le 1} \\ {[0.5 \tanh (\text{SLQ}_{i} - 1) + 1]^{\alpha } a_{ij}^{n} (x_{j}^{r} /x_{j}^{n} )^{\beta}\quad {\text{if}}\quad \text{SLQ}_{i} > 1} \\ \end{array} } \right. $$
(16)
Also, on the same page, the 2DLQ method is, in two instances, erroneously referred to as the 2DLS method.
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The original article has also been corrected.
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