| article html file updated | 9 February 2020 09:58 CET | Update | https://www.mdpi.com/2411-5134/3/1/18 |
| article html file updated | 1 October 2019 15:53 CEST | Update | - |
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| article html file updated | 15 March 2018 15:36 CET | Original file | - |
| article xml uploaded. | 15 March 2018 15:35 CET | Update | https://www.mdpi.com/2411-5134/3/1/18/xml |
| article pdf uploaded. | 15 March 2018 15:35 CET | Version of Record | https://www.mdpi.com/2411-5134/3/1/18/pdf |
