| article html file updated | 7 February 2020 18:39 CET | Update | https://www.mdpi.com/1422-0067/17/12/1977 |
| article html file updated | 4 May 2019 21:17 CEST | Update | - |
| article html file updated | 27 December 2016 10:53 CET | Update | - |
| article html file updated | 25 November 2016 12:51 CET | Original file | - |
| article xml uploaded. | 25 November 2016 12:49 CET | Update | https://www.mdpi.com/1422-0067/17/12/1977/xml |
| article xml uploaded. | 25 November 2016 12:49 CET | Original file | - |
| article pdf uploaded. | 25 November 2016 12:49 CET | Version of Record | https://www.mdpi.com/1422-0067/17/12/1977/pdf |
