| article html file updated | 9 February 2020 00:55 CET | Update | https://www.mdpi.com/2077-1444/9/1/3 |
| article html file updated | 29 September 2019 10:09 CEST | Update | N/A |
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| article xml uploaded. | 22 December 2017 13:04 CET | Original file | https://www.mdpi.com/2077-1444/9/1/3/xml |
| article pdf uploaded. | 22 December 2017 13:04 CET | Version of Record | https://www.mdpi.com/2077-1444/9/1/3/pdf |