| article html file updated | 7 February 2020 03:01 CET | Update | https://www.mdpi.com/1996-1073/9/1/25 |
| article html file updated | 6 May 2019 03:21 CEST | Update | - |
| article html file updated | 26 March 2019 17:43 CET | Original file | - |
| article pdf uploaded. | 20 January 2016 15:05 CET | Updated version of record | https://www.mdpi.com/1996-1073/9/1/25/pdf |
| article xml uploaded. | 20 January 2016 15:05 CET | Update | https://www.mdpi.com/1996-1073/9/1/25/xml |
| article pdf uploaded. | 20 January 2016 13:01 CET | Updated version of record | https://www.mdpi.com/1996-1073/9/1/25/pdf-vor |
| article xml uploaded. | 20 January 2016 13:01 CET | Update | - |
| article pdf uploaded. | 4 January 2016 12:50 CET | Version of Record | https://www.mdpi.com/1996-1073/9/1/25/pdf-vor |
