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Hamster, Robert (1) Halliday, David (university Of Pittsburgh), Resnick, Robert (rensselaer Polytechnic Institute), Walker, Jearl (cleveland State University) (2) Rubens, Robert, Tilburg, Cornelis Van, Hee, Robrecht Van (1) Hofrichter, Robert (1) Johnson, Jill Mccabe (1)

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