| article html file updated | 8 February 2020 00:21 CET | Update | https://www.mdpi.com/2218-1997/3/1/16 |
| article html file updated | 23 September 2019 13:21 CEST | Update | - |
| article html file updated | 4 May 2019 09:14 CEST | Update | - |
| article html file updated | 30 March 2017 03:37 CEST | Update | - |
| article html file updated | 27 February 2017 09:49 CET | Original file | - |
| article xml uploaded. | 27 February 2017 09:48 CET | Original file | https://www.mdpi.com/2218-1997/3/1/16/xml |
| article pdf uploaded. | 27 February 2017 09:48 CET | Version of Record | https://www.mdpi.com/2218-1997/3/1/16/pdf |
