STEEG, Torben; 						WILLIAMS, Julian.
 Making Ballistas With Mathematics, Science and Technology.
<strong>Design &amp; Technology Teaching</strong>, [S.l.], v. 23, n. 3, aug. 2009.
ISSN 0958-3017. Available at: &lt;<a href="https://www.ariadne.ac.uk/DTT/article/view/574" target="_new">https://www.ariadne.ac.uk/DTT/article/view/574</a>&gt;. Date accessed: 24 sep. 2022.