by Krizek, Michal | Luca, Florian | Somer, Lawrence.
by Nazareth, John Lawrence.
by Niculescu, Constantin | Persson, Lars Erik.
by Borwein, Peter B.
by Muresan, Marian.
by Jacobson, Michael J | Williams, Hugh C.
by Herman, Jiri | Kucera, Radam | Simsa, Jaromir.
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