| article html file updated | 7 February 2020 22:30 CET | Update | https://www.mdpi.com/1422-0067/18/2/303 |
| article html file updated | 23 September 2019 03:00 CEST | Update | - |
| article html file updated | 4 May 2019 13:04 CEST | Update | - |
| article html file updated | 2 March 2017 09:54 CET | Update | - |
| article html file updated | 9 February 2017 12:19 CET | Original file | - |
| article xml uploaded. | 9 February 2017 12:18 CET | Original file | https://www.mdpi.com/1422-0067/18/2/303/xml |
| article pdf uploaded. | 9 February 2017 12:18 CET | Updated version of record | https://www.mdpi.com/1422-0067/18/2/303/pdf |
| article pdf uploaded. | 30 January 2017 15:42 CET | Version of Record | https://www.mdpi.com/1422-0067/18/2/303/pdf-vor |
