| article html file updated | 7 February 2020 20:53 CET | Update | https://www.mdpi.com/2075-4701/7/1/13 |
| article html file updated | 22 September 2019 18:26 CEST | Update | - |
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| article html file updated | 7 February 2017 09:31 CET | Update | - |
| article html file updated | 6 January 2017 08:21 CET | Original file | - |
| article xml uploaded. | 6 January 2017 08:20 CET | Update | https://www.mdpi.com/2075-4701/7/1/13/xml |
| article pdf uploaded. | 6 January 2017 08:20 CET | Version of Record | https://www.mdpi.com/2075-4701/7/1/13/pdf |
