| article html file updated | 8 February 2020 03:54 CET | Update | https://www.mdpi.com/2076-2607/5/2/20 |
| article html file updated | 24 September 2019 09:37 CEST | Update | - |
| article html file updated | 4 May 2019 01:37 CEST | Update | - |
| article html file updated | 28 June 2017 14:09 CEST | Update | - |
| article html file updated | 19 April 2017 13:00 CEST | Original file | - |
| article xml uploaded. | 19 April 2017 12:58 CEST | Update | https://www.mdpi.com/2076-2607/5/2/20/xml |
| article pdf uploaded. | 19 April 2017 12:58 CEST | Version of Record | https://www.mdpi.com/2076-2607/5/2/20/pdf |
