| article html file updated | 6 February 2020 05:58 CET | Update | https://www.mdpi.com/1996-1073/6/12/6373 |
| article html file updated | 7 May 2019 21:16 CEST | Update | - |
| article html file updated | 21 March 2019 08:49 CET | Update | - |
| article html file updated | 20 July 2017 11:33 CEST | Update | - |
| article html file updated | 20 July 2017 11:31 CEST | Update | - |
| article html file updated | 20 July 2017 11:30 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 11:28 CEST | Original file | https://www.mdpi.com/1996-1073/6/12/6373/xml |
| article pdf uploaded. | 4 December 2013 15:21 CET | Version of Record | https://www.mdpi.com/1996-1073/6/12/6373/pdf |
