| article html file updated | 8 February 2020 02:05 CET | Update | https://www.mdpi.com/1996-1073/10/4/425 |
| article html file updated | 23 September 2019 23:28 CEST | Update | - |
| article html file updated | 4 May 2019 05:21 CEST | Update | - |
| article html file updated | 28 April 2017 05:54 CEST | Update | - |
| article html file updated | 27 March 2017 05:28 CEST | Update | - |
| article html file updated | 24 March 2017 22:25 CET | Update | - |
| article html file updated | 24 March 2017 05:12 CET | Original file | - |
| article xml uploaded. | 24 March 2017 05:10 CET | Original file | https://www.mdpi.com/1996-1073/10/4/425/xml |
| article pdf uploaded. | 24 March 2017 05:10 CET | Updated version of record | https://www.mdpi.com/1996-1073/10/4/425/pdf |
| article pdf uploaded. | 23 March 2017 12:20 CET | Version of Record | https://www.mdpi.com/1996-1073/10/4/425/pdf-vor |
