Pages should be numbered consecutively. The length of manuscripts is limited to 24 journal pages. Four copies are to be sent to Prof. DDr. D-53113 Bonn, Germany. For details, please refer to any recent issue of this journal.
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T he reference should be included in parentheses. Mathematical equations that are referred to elsewhere in the paper should be displayed and numbered consecutively on the right. Tables should be kept to a minimum and essential to the comprehension of the text. They should be numbered consecutively with arabic numerals and typed on a separate sheet. Complete sources must be identified at the bottom.