Tsjeko-meer: Verskil tussen weergawes

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fixing doi from hijacked website, see here
Lyn 177:
| year = 2008
| month = April
| url = http://www.blackwell-synergy.com/doi/pdf.org/10.1111/j.1365-3121.2008.00792.x
| doi = 10.1111/j.1365-3121.2008.00792.x
| accessdate = 2008-05-27