VASILEV, Aleksandar.
 Economics of an export tax in the standard Keynesian framework: the case of Nigeria.
<strong>Journal of Mathematical Economics and Finance</strong>, [S.l.], v. 11, n. 1, p. 7 - 11, june 2025.
ISSN 2458-0813.
Available at: &lt;<a href="https://www.journals.aserspublishing.eu/jmef/article/view/9221" target="_new">https://www.journals.aserspublishing.eu/jmef/article/view/9221</a>&gt;. Date accessed: 16 dec. 2025.
doi: <a href="https://doi.org/10.14505/jmef.v11.1(20).01">https://doi.org/10.14505/jmef.v11.1(20).01</a>.