| article html file updated | 8 February 2020 17:29 CET | Update | https://www.mdpi.com/2076-0752/6/4/18 |
| article html file updated | 2 May 2019 23:23 CEST | Update | - |
| article html file updated | 2 January 2018 16:38 CET | Update | - |
| article html file updated | 6 November 2017 09:04 CET | Update | - |
| article xml uploaded. | 6 November 2017 09:03 CET | Update | https://www.mdpi.com/2076-0752/6/4/18/xml |
| article pdf uploaded. | 6 November 2017 09:03 CET | Updated version of record | https://www.mdpi.com/2076-0752/6/4/18/pdf |
| article pdf uploaded. | 6 October 2017 14:33 CEST | Updated version of record | https://www.mdpi.com/2076-0752/6/4/18/pdf-vor |
| article pdf uploaded. | 29 September 2017 16:55 CEST | Updated version of record | https://www.mdpi.com/2076-0752/6/4/18/pdf-vor |
| article html file updated | 29 September 2017 16:31 CEST | Original file | - |
| article xml uploaded. | 29 September 2017 16:30 CEST | Original file | - |
| article pdf uploaded. | 29 September 2017 16:30 CEST | Updated version of record | https://www.mdpi.com/2076-0752/6/4/18/pdf-vor |
| article pdf uploaded. | 29 September 2017 13:53 CEST | Version of Record | https://www.mdpi.com/2076-0752/6/4/18/pdf-vor |
