by Myasnikov, Alexei G | Shpilrain, Vladimir.
by Winternitz, P | Gomez-Ullate, D | Iserles, A | Levi, D.
by Ivanov, A. A | Liebeck, M. W | Saxl, J.
by Koolen, Jack | Kwak, Jin Ho | Xu, Ming-Yao.
by Kappe, Luise-Charlotte | Magidin, Arturo | Morse, Robert Fitzgerald.
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