| article html file updated | 7 February 2020 10:00 CET | Update | https://www.mdpi.com/1422-0067/17/6/902 |
| article html file updated | 5 May 2019 13:15 CEST | Update | - |
| article html file updated | 27 March 2019 07:11 CET | Update | - |
| article html file updated | 29 June 2016 03:49 CEST | Update | - |
| article html file updated | 9 June 2016 13:39 CEST | Original file | - |
| article xml uploaded. | 9 June 2016 13:37 CEST | Original file | https://www.mdpi.com/1422-0067/17/6/902/xml |
| article pdf uploaded. | 9 June 2016 13:37 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/6/902/pdf |
