Here you may specify the publication date of the papers or the
period in which the papers have been published.
This input should consists of two parts: the FROM date and the UNTIL
- However, if there is no entry in the FROM-field, the
search-engine will assume the 1.1.1970 as the beginning; if there is
no entry in the UNTIL-field, the search-engine will assume the
13.12.2037 as the end.
As a general rule, please stick to the format day-month-year
(DD.MM.YYYY), e.g.: "01.10.1998".
- Zeros before single-figure days or months are not
necessary. Thus, the above date may as well be entered as follows:
- Do not enter dates before the year 1970 note that there
are no papers older than 1993 in the database or after 2037.
It is, however, possible to enter less precise dates in the
following form: YYYY or MM.YYYY, e.g.: "1998" or "10.1998".
- Note that the search-engine amplifies automatically your entry:
if e.g. "1998" was your input in the FROM-field the
search-engine assumes that it is "1.1.1998", and if you
entered "10.1998" in the UNTIL-field, it will be expanded
to "31.10.1998" to cover the whole month.
If you want to search for a paper of one particular date,
please enter this date in both fields (FROM and UNTIL).