| article html file updated | 7 February 2020 09:37 CET | Update | https://www.mdpi.com/1422-0067/17/6/858 |
| article html file updated | 5 May 2019 13:58 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:25 CET | Update | N/A |
| article html file updated | 29 June 2016 03:36 CEST | Update | N/A |
| article html file updated | 1 June 2016 14:24 CEST | Original file | N/A |
| article xml uploaded. | 1 June 2016 14:23 CEST | Original file | https://www.mdpi.com/1422-0067/17/6/858/xml |
| article pdf uploaded. | 1 June 2016 14:23 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/6/858/pdf |
