Oscillation criteria for second order differential equations with positive and negative coefficients. - Jelena V. Manojlovic; Yutaka Shoukaku; Tomoyuki Tanigawa; Norio Yoshida (Appl. Math. Comput., 2006)

Existence of regularly varying solutions with nonzero indices of half-linear differential equations with retarded arguments. - Takasi Kusano; Jelena V. Manojlovic; Tomoyuki Tanigawa (Comput. Math. Appl., 2010)