| article html file updated | 5 February 2020 10:31 CET | Update | https://www.mdpi.com/1422-0067/3/5/447 |
| article html file updated | 9 May 2019 15:02 CEST | Update | - |
| article html file updated | 19 March 2019 14:52 CET | Update | - |
| article html file updated | 20 July 2017 04:12 CEST | Update | - |
| article html file updated | 20 July 2017 04:11 CEST | Update | - |
| article html file updated | 20 July 2017 04:11 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 04:09 CEST | Original file | https://www.mdpi.com/1422-0067/3/5/447/xml |
