| article html file updated | 9 February 2020 02:41 CET | Update | https://www.mdpi.com/2305-6290/2/1/5 |
| article html file updated | 29 September 2019 19:59 CEST | Update | - |
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| article html file updated | 11 January 2018 16:53 CET | Original file | - |
| article xml uploaded. | 11 January 2018 16:52 CET | Original file | https://www.mdpi.com/2305-6290/2/1/5/xml |
| article pdf uploaded. | 11 January 2018 16:52 CET | Version of Record | https://www.mdpi.com/2305-6290/2/1/5/pdf |
