Mau, N., & 		Hoa, N.
(2001).
 Characterization and Generalized Characterization of Singular Integral Equation.
<em>VNU Journal Of Science: Natural Sciences And Technology, 17</em>(4).
Retrieved from <a href="https://js.vnu.edu.vn/NST/article/view/2385" target="_new">https://js.vnu.edu.vn/NST/article/view/2385</a>