Rajab Ali Kamyabi Gol and Reihaneh Raisi Tousi
J. Korean Math. Soc. 2011 48:899-912.
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J. Korean Math. Soc. 2011 48:899-912.
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Samuel G. Moreno and Esther M. Garc\'{\i}a–Caballero
J. Korean Math. Soc. 2011 48:913-926.
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J. Korean Math. Soc. 2011 48:913-926.
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Sne\v zana \v C. \v Zivkovi\’c-Zlatanovi\’c, Dragan S. Djordjevi\’c, and Robin E. Harte
J. Korean Math. Soc. 2011 48:1053-1063.
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J. Korean Math. Soc. 2011 48:1053-1063.
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Young Wook Kim, Sung-Eun Koh, Heayong Shin, and Seong-Deog Yang
J. Korean Math. Soc. 2011 48:1083-1100.
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J. Korean Math. Soc. 2011 48:1083-1100.
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