| article html file updated | 8 February 2020 07:39 CET | Update | https://www.mdpi.com/1422-0067/18/6/1221 |
| article html file updated | 25 September 2019 05:11 CEST | Update | - |
| article html file updated | 3 May 2019 18:39 CEST | Update | - |
| article html file updated | 28 June 2017 13:32 CEST | Update | - |
| article html file updated | 7 June 2017 12:58 CEST | Original file | - |
| article xml uploaded. | 7 June 2017 12:56 CEST | Original file | https://www.mdpi.com/1422-0067/18/6/1221/xml |
| article pdf uploaded. | 7 June 2017 12:56 CEST | Updated version of record | https://www.mdpi.com/1422-0067/18/6/1221/pdf |
| article pdf uploaded. | 7 June 2017 10:26 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/6/1221/pdf-vor |
