| article html file updated | 8 February 2020 07:40 CET | Update | https://www.mdpi.com/1422-0067/18/6/1218 |
| article html file updated | 25 September 2019 05:15 CEST | Update | - |
| article html file updated | 3 May 2019 18:37 CEST | Update | - |
| article html file updated | 28 June 2017 13:31 CEST | Update | - |
| article html file updated | 7 June 2017 11:24 CEST | Original file | - |
| article xml uploaded. | 7 June 2017 11:23 CEST | Original file | https://www.mdpi.com/1422-0067/18/6/1218/xml |
| article pdf uploaded. | 7 June 2017 11:23 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/6/1218/pdf |
