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- [1] SOME PROBLEMS AND INADEQUACIES IN THE VANDERPOEL-SCHAAP-VANDERMEY THEORY OF COMBINATORS PROCEEDINGS OF THE KONINKLIJKE NEDERLANDSE AKADEMIE VAN WETENSCHAPPEN SERIES A-MATHEMATICAL SCIENCES, 1984, 87 (04): : 373 - 377
- [7] NEW ARITHMETICAL OPERATORS IN THE THEORY OF COMBINATORS .1. PROCEEDINGS OF THE KONINKLIJKE NEDERLANDSE AKADEMIE VAN WETENSCHAPPEN SERIES A-MATHEMATICAL SCIENCES, 1980, 83 (03): : 271 - 286
- [10] SOME ADDITIONS TO THE THEORY OF RADIO-FREQUENCY HIGH-VOLTAGE SUPPLIES PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1949, 37 (02): : 199 - 206