Minyi Zhu, Guobin Gong & Jun Xia. (1970). Curve Optimization of Tapered Cantilever Beams Under Tip Loads.
            <i>Advances in Applied Mathematics and Mechanics</i>. <i>13</i> (6).
            1485-1500.
         doi:10.4208/aamm.OA-2020-0196