| article html file updated | 9 February 2020 07:31 CET | Update | https://www.mdpi.com/2077-1444/9/2/63 |
| article html file updated | 1 May 2019 16:33 CEST | Update | N/A |
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| article html file updated | 29 March 2019 01:15 CET | Update | N/A |
| article html file updated | 14 March 2018 15:13 CET | Update | N/A |
| article html file updated | 24 February 2018 12:35 CET | Original file | N/A |
| article xml uploaded. | 24 February 2018 12:34 CET | Original file | https://www.mdpi.com/2077-1444/9/2/63/xml |
| article pdf uploaded. | 24 February 2018 12:34 CET | Version of Record | https://www.mdpi.com/2077-1444/9/2/63/pdf |
