| article html file updated | 9 February 2020 03:41 CET | Update | https://www.mdpi.com/2411-5142/3/1/8 |
| article html file updated | 30 September 2019 01:42 CEST | Update | N/A |
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| article html file updated | 19 January 2018 17:09 CET | Original file | N/A |
| article xml uploaded. | 19 January 2018 17:08 CET | Original file | https://www.mdpi.com/2411-5142/3/1/8/xml |
| article pdf uploaded. | 19 January 2018 17:08 CET | Version of Record | https://www.mdpi.com/2411-5142/3/1/8/pdf |
