| article html file updated | 7 February 2020 04:07 CET | Update | https://www.mdpi.com/1996-1073/9/2/88 |
| article html file updated | 6 May 2019 01:17 CEST | Update | - |
| article html file updated | 26 March 2019 19:47 CET | Original file | - |
| article pdf uploaded. | 30 January 2016 14:10 CET | Updated version of record | https://www.mdpi.com/1996-1073/9/2/88/pdf |
| article xml uploaded. | 30 January 2016 14:10 CET | Update | https://www.mdpi.com/1996-1073/9/2/88/xml |
| article pdf uploaded. | 30 January 2016 11:48 CET | Version of Record | https://www.mdpi.com/1996-1073/9/2/88/pdf-vor |
| article xml uploaded. | 30 January 2016 11:48 CET | Original file | - |
