| article html file updated | 7 February 2020 09:28 CET | Update | https://www.mdpi.com/2075-163X/6/2/51 |
| article html file updated | 5 May 2019 14:18 CEST | Update | - |
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| article html file updated | 4 July 2016 06:25 CEST | Update | - |
| article html file updated | 30 May 2016 10:38 CEST | Update | - |
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| article xml uploaded. | 30 May 2016 08:18 CEST | Original file | https://www.mdpi.com/2075-163X/6/2/51/xml |
| article pdf uploaded. | 30 May 2016 08:18 CEST | Version of Record | https://www.mdpi.com/2075-163X/6/2/51/pdf |
