| article html file updated | 11 February 2020 16:32 CET | Update | https://www.mdpi.com/2076-3298/6/2/20 |
| article html file updated | 15 October 2019 02:49 CEST | Update | - |
| article html file updated | 26 April 2019 15:46 CEST | Update | - |
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| article html file updated | 16 February 2019 10:17 CET | Original file | - |
| article pdf uploaded. | 16 February 2019 10:15 CET | Version of Record | https://www.mdpi.com/2076-3298/6/2/20/pdf |
| article xml uploaded. | 16 February 2019 10:15 CET | Update | https://www.mdpi.com/2076-3298/6/2/20/xml |
| article xml file uploaded | 16 February 2019 10:15 CET | Original file | - |
