| article html file updated | 7 February 2020 09:45 CET | Update | https://www.mdpi.com/1422-0067/17/6/879 |
| article html file updated | 5 May 2019 13:43 CEST | Update | - |
| article html file updated | 27 March 2019 06:42 CET | Update | - |
| article html file updated | 29 June 2016 03:42 CEST | Update | - |
| article html file updated | 3 June 2016 14:17 CEST | Original file | - |
| article xml uploaded. | 3 June 2016 14:16 CEST | Original file | https://www.mdpi.com/1422-0067/17/6/879/xml |
| article pdf uploaded. | 3 June 2016 14:16 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/6/879/pdf |
