| article html file updated | 8 February 2020 17:27 CET | Update | https://www.mdpi.com/2076-0752/6/4/16 |
| article html file updated | 2 May 2019 23:28 CEST | Update | - |
| article html file updated | 2 January 2018 16:37 CET | Update | - |
| article pdf uploaded. | 29 September 2017 12:06 CEST | Version of Record | https://www.mdpi.com/2076-0752/6/4/16/pdf |
| article html file updated | 29 September 2017 12:00 CEST | Original file | - |
| article xml uploaded. | 29 September 2017 11:59 CEST | Update | https://www.mdpi.com/2076-0752/6/4/16/xml |
| article xml uploaded. | 29 September 2017 11:59 CEST | Update | - |
| article xml uploaded. | 29 September 2017 11:59 CEST | Original file | - |
