| article html file updated | 8 February 2020 16:41 CET | Update | https://www.mdpi.com/1422-0067/18/9/2018 |
| article html file updated | 27 September 2019 06:14 CEST | Update | - |
| article html file updated | 3 May 2019 01:03 CEST | Update | - |
| article html file updated | 30 September 2017 12:03 CEST | Update | - |
| article html file updated | 21 September 2017 06:07 CEST | Original file | - |
| article xml uploaded. | 21 September 2017 06:06 CEST | Original file | https://www.mdpi.com/1422-0067/18/9/2018/xml |
| article pdf uploaded. | 21 September 2017 06:06 CEST | Updated version of record | https://www.mdpi.com/1422-0067/18/9/2018/pdf |
| article pdf uploaded. | 20 September 2017 15:04 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/9/2018/pdf-vor |
