| Title: | Problém jehly v obecném čtyřúhelníku (Czech) | 
| Title: | The needle problem for a general quadrangular (English) | 
| Title: | Le problème de l'aiguille dans un quadrangle (French) | 
| Title: | Das Nadelproblem im Allgemeinen Vierecke (German) | 
| Author: | Setzer, Ota | 
| Language: | Czech | 
| Journal: | Časopis pro pěstování matematiky a fysiky | 
| ISSN: | 1802-114X (printed edition, 1872-1950) | 
| Volume: | 62 | 
| Issue: | 2 | 
| Year: | 1933 | 
| Pages: | 1-4 | 
| Summary lang: | French | 
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| Category: | math | 
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| idZBL: | Zbl 0006.06802 | 
| DOI: | 10.21136/CPMF.1933.121944 | 
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| Date available: | 2009-08-29T17:45:12Z | 
| Last updated: | 2020-07-29 | 
| Stable URL: | http://hdl.handle.net/10338.dmlcz/121944 | 
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