| article html file updated | 7 February 2020 08:55 CET | Update | https://www.mdpi.com/1422-0067/17/5/756 |
| article html file updated | 5 May 2019 15:24 CEST | Update | - |
| article html file updated | 27 March 2019 05:05 CET | Update | - |
| article html file updated | 26 May 2016 12:12 CEST | Update | - |
| article html file updated | 18 May 2016 13:51 CEST | Original file | - |
| article xml uploaded. | 18 May 2016 13:50 CEST | Original file | https://www.mdpi.com/1422-0067/17/5/756/xml |
| article pdf uploaded. | 18 May 2016 13:50 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/5/756/pdf |
