| 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 | - |
| article html file updated | 12 April 2019 11:29 CEST | Update | - |
| article html file updated | 3 April 2019 21:46 CEST | Update | - |
| article html file updated | 1 March 2019 18:35 CET | Update | - |
| article html file updated | 1 March 2019 02:54 CET | Update | - |
| 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 | - |