| article html file updated | 5 February 2020 12:03 CET | Update | https://www.mdpi.com/1422-8599/2003/2/M325 |
| article html file updated | 9 May 2019 11:54 CEST | Update | - |
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| article html file updated | 26 September 2017 10:11 CEST | Update | - |
| article xml uploaded. | 26 September 2017 10:10 CEST | Update | https://www.mdpi.com/1422-8599/2003/2/M325/xml |
| article html file updated | 21 September 2017 10:45 CEST | Update | - |
| article xml uploaded. | 21 September 2017 10:44 CEST | Original file | - |
| article html file updated | 14 December 2016 09:02 CET | Original file | - |
