| article html file updated | 7 February 2020 22:23 CET | Update | https://www.mdpi.com/1422-0067/18/2/281 |
| article html file updated | 23 September 2019 02:21 CEST | Update | - |
| article html file updated | 4 May 2019 13:18 CEST | Update | - |
| article html file updated | 2 March 2017 09:51 CET | Update | - |
| article html file updated | 3 February 2017 12:13 CET | Original file | - |
| article xml uploaded. | 3 February 2017 12:12 CET | Original file | https://www.mdpi.com/1422-0067/18/2/281/xml |
| article pdf uploaded. | 3 February 2017 12:12 CET | Updated version of record | https://www.mdpi.com/1422-0067/18/2/281/pdf |
| article pdf uploaded. | 27 January 2017 17:05 CET | Version of Record | https://www.mdpi.com/1422-0067/18/2/281/pdf-vor |
