| article html file updated | 9 February 2020 13:31 CET | Update | https://www.mdpi.com/2313-7673/3/2/7 |
| article html file updated | 2 October 2019 13:00 CEST | Update | - |
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| article html file updated | 27 June 2018 09:11 CEST | Update | - |
| article html file updated | 12 April 2018 11:06 CEST | Original file | - |
| article xml uploaded. | 12 April 2018 11:05 CEST | Update | https://www.mdpi.com/2313-7673/3/2/7/xml |
| article pdf uploaded. | 12 April 2018 11:05 CEST | Version of Record | https://www.mdpi.com/2313-7673/3/2/7/pdf |
