CARFÌ, David.
 Position operator.
<strong>Journal of Mathematical Economics and Finance</strong>, [S.l.], v. 4, n. 1(6), p. 79 - 90, june 2018.
ISSN 2458-0813.
Available at: &lt;<a href="https://journals.aserspublishing.eu/jmef/article/view/2404" target="_new">https://journals.aserspublishing.eu/jmef/article/view/2404</a>&gt;. Date accessed: 03 jan. 2025.
doi: <a href="https://doi.org/10.14505//jmef.v4.1(6).05">https://doi.org/10.14505//jmef.v4.1(6).05</a>.