A complex variable boundary element method for elliptic partial differential equations in a multiple-connected region. - Whye-Teong Ang; Ilwon Kang (Int. J. Comput. Math., 2000)

Graphs satisfying inequality Theta(G2)leq Theta(G). - Ilwon Kang; Suh-Ryung Kim; Yangmi Shin; Yunsun Nam (Discret. Math., 2002)