| article html file updated | 8 February 2020 07:35 CET | Update | https://new.mdpi.com/1422-0067/18/6/1209 |
| article html file updated | 25 September 2019 04:52 CEST | Update | - |
| article html file updated | 3 May 2019 18:46 CEST | Update | - |
| article html file updated | 28 June 2017 13:30 CEST | Update | - |
| article html file updated | 7 June 2017 03:14 CEST | Original file | - |
| article xml uploaded. | 7 June 2017 03:12 CEST | Original file | https://new.mdpi.com/1422-0067/18/6/1209/xml |
| article pdf uploaded. | 7 June 2017 03:12 CEST | Updated version of record | https://new.mdpi.com/1422-0067/18/6/1209/pdf |
| article pdf uploaded. | 6 June 2017 12:41 CEST | Version of Record | https://new.mdpi.com/1422-0067/18/6/1209/pdf-vor |
