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by Cai, Jinfa; Kaiser, Gabriele; Perry, Bob; et al.
by Kaiser, Gabriele; Blum, Werner; Ferri, Rita Borromeo; et al.
by Borromeo Ferri, Rita; Greefrath, Gilbert; Kaiser, Gabriele
by Cai, Jinfa; Knuth, Eric; Kaiser, Gabriele; et al.
by Stillmann, Gloria Ann; Kaiser, Gabriele; Blum, Werner; et al.
by Blömeke, Sigrid; Hsieh, Feng-jui; Kaiser, Gabriele; et al.
by Guttmann, Eva; Kaiser, Gabriele