D’AMICO, Rosario.
 A method to generate Harshad numbers.
<strong>Journal of Mathematical Economics and Finance</strong>, [S.l.], v. 5, n. 1, p. 19-26, june 2019.
ISSN 2458-0813.
Available at: &lt;<a href="https://journals.aserspublishing.eu/jmef/article/view/3935" target="_new">https://journals.aserspublishing.eu/jmef/article/view/3935</a>&gt;. Date accessed: 22 july 2024.