| article html file updated | 9 February 2020 19:37 CET | Update | https://www.mdpi.com/2310-2861/4/2/52 |
| article html file updated | 4 October 2019 02:36 CEST | Update | - |
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| article xml uploaded. | 12 June 2018 14:59 CEST | Update | https://www.mdpi.com/2310-2861/4/2/52/xml |
| article pdf uploaded. | 12 June 2018 14:59 CEST | Updated version of record | https://www.mdpi.com/2310-2861/4/2/52/pdf |
| article html file updated | 11 June 2018 12:42 CEST | Update | - |
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