SOEWIGNYO, Tonny.
 Analyzing Listed Indonesian Securities Companies’ Performance Using Data Envelopment Analysis.
<strong>JBE (Journal of Business and Economics)</strong>, [S.l.], p. 29-34, june 2010.
ISSN 1412-0070. Available at: &lt;<a href="https://ejournal.unklab.ac.id/index.php/jbe/article/view/118" target="_new">https://ejournal.unklab.ac.id/index.php/jbe/article/view/118</a>&gt;. Date accessed: 04 oct. 2025.