| article html file updated | 8 February 2020 00:51 CET | Update | https://www.mdpi.com/1422-0067/18/3/568 |
| article html file updated | 23 September 2019 16:23 CEST | Update | - |
| article html file updated | 4 May 2019 08:02 CEST | Update | - |
| article html file updated | 30 March 2017 10:38 CEST | Update | - |
| article html file updated | 6 March 2017 11:35 CET | Original file | - |
| article xml uploaded. | 6 March 2017 11:34 CET | Original file | https://www.mdpi.com/1422-0067/18/3/568/xml |
| article pdf uploaded. | 6 March 2017 11:34 CET | Version of Record | https://www.mdpi.com/1422-0067/18/3/568/pdf |
