Yeongwoo Choi. "Recognition of Unconstrainted Handwritten Numerals Based on Dual Cooperative Neural Network". Department of Computer Science, University of Southern California, Dec 1994.
<span class="author">Yeongwoo Choi</span>. "<span class="title">Recognition of Unconstrainted Handwritten Numerals Based on Dual Cooperative Neural Network</span>". <span class="school">Department of Computer Science, University of Southern California</span>, <span class="month">Dec</span> <span class="year">1994</span>.