SPROULE, Robert.
 In Search of A Giffen Input: A Comprehensive Analysis of The Wold-Juréen (1953) Production Function.
<strong>Journal of Mathematical Economics and Finance</strong>, [S.l.], v. 8, n. 2, p. 87 - 100, dec. 2022.
ISSN 2458-0813.
Available at: &lt;<a href="https://journals.aserspublishing.eu/jmef/article/view/7597" target="_new">https://journals.aserspublishing.eu/jmef/article/view/7597</a>&gt;. Date accessed: 20 apr. 2024.
doi: <a href="https://doi.org/10.14505/jmef.v8.2(15).03">https://doi.org/10.14505/jmef.v8.2(15).03</a>.