| article html file updated | 9 February 2020 01:57 CET | Update | https://www.mdpi.com/2075-4434/6/1/4 |
| article html file updated | 2 May 2019 04:31 CEST | Update | N/A |
| article html file updated | 18 April 2019 02:35 CEST | Update | N/A |
| article html file updated | 28 March 2019 13:01 CET | Update | N/A |
| article html file updated | 27 March 2018 12:38 CEST | Update | N/A |
| article html file updated | 4 January 2018 08:07 CET | Original file | N/A |
| article xml uploaded. | 4 January 2018 08:06 CET | Original file | https://www.mdpi.com/2075-4434/6/1/4/xml |
| article pdf uploaded. | 4 January 2018 08:06 CET | Version of Record | https://www.mdpi.com/2075-4434/6/1/4/pdf |
