| article html file updated | 7 February 2020 08:58 CET | Update | https://www.mdpi.com/2079-4983/7/2/13 |
| article html file updated | 5 May 2019 15:17 CEST | Update | - |
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| article html file updated | 5 July 2016 04:43 CEST | Update | - |
| article html file updated | 19 May 2016 15:12 CEST | Original file | - |
| article xml uploaded. | 19 May 2016 15:11 CEST | Original file | https://www.mdpi.com/2079-4983/7/2/13/xml |
| article pdf uploaded. | 19 May 2016 15:10 CEST | Version of Record | https://www.mdpi.com/2079-4983/7/2/13/pdf |
