| article html file updated | 8 February 2020 12:16 CET | Update | https://www.mdpi.com/2077-0375/7/3/39 |
| article html file updated | 26 September 2019 05:37 CEST | Update | - |
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| article html file updated | 30 September 2017 11:33 CEST | Update | - |
| article html file updated | 28 July 2017 13:42 CEST | Original file | - |
| article xml uploaded. | 28 July 2017 13:41 CEST | Update | https://www.mdpi.com/2077-0375/7/3/39/xml |
| article pdf uploaded. | 28 July 2017 13:41 CEST | Version of Record | https://www.mdpi.com/2077-0375/7/3/39/pdf |
