| article html file updated | 5 February 2020 23:14 CET | Update | https://www.mdpi.com/2075-4698/2/4/345 |
| article html file updated | 19 September 2019 15:28 CEST | Update | - |
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| article xml uploaded. | 16 January 2013 10:44 CET | Update | https://www.mdpi.com/2075-4698/2/4/345/xml |
| article html file updated | 16 January 2013 10:08 CET | Original file | - |
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