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The page contains a search form for materials in the journal archive. None of the fields is obligatory, i.e. if you click the "Search" button when the search fields are empty, a page with the text "Search results" will be generated, in which all available articles will be displayed.
A choice of the "Section" will narrow the search criteria to the specified heading, a choice of the "Year" will narrow the search criteria to that year of publication.
When using the search string, specify under the "Search in:" the part of the article in which you want to search (Authors, Title, Keywords, Abstract). Note that if one of the "Search in:" checkboxes is selected, you need to fill in the search string as well (if it is selected occasionally, just refresh the page by pressing F5).
The search results are displayed in a separate page: the authors, the title of the article (which is the link to the full-text pdf-file) and the abstract (as opposed to the Archive of the numbers page, where the abstract appears in the pop-up window when the mouse points the title of the article).