Jirkovsky, L., & 		Bo-ot, L.
(2007).
 Onset of Turbulence in Planar and Circular Pipe.
<em>Science Diliman: A Journal Of Pure And Applied Sciences, 15</em>(1).
Retrieved from <a href="https://www.journals.upd.edu.ph/index.php/sciencediliman/article/view/127" target="_new">https://www.journals.upd.edu.ph/index.php/sciencediliman/article/view/127</a>