| article html file updated | 7 February 2020 23:45 CET | Update | https://www.mdpi.com/2076-3298/4/1/18 |
| article html file updated | 23 September 2019 09:59 CEST | Update | - |
| article html file updated | 4 May 2019 10:32 CEST | Update | - |
| article html file updated | 29 March 2017 10:29 CEST | Update | - |
| article html file updated | 19 February 2017 09:31 CET | Original file | - |
| article xml uploaded. | 19 February 2017 09:30 CET | Original file | https://www.mdpi.com/2076-3298/4/1/18/xml |
| article pdf uploaded. | 19 February 2017 09:30 CET | Version of Record | https://www.mdpi.com/2076-3298/4/1/18/pdf |
