| article html file updated | 7 February 2020 06:50 CET | Update | https://www.mdpi.com/1422-0067/17/4/500 |
| article html file updated | 5 May 2019 19:33 CEST | Update | - |
| article html file updated | 27 March 2019 01:04 CET | Update | - |
| article html file updated | 28 April 2016 04:58 CEST | Update | - |
| article html file updated | 5 April 2016 12:15 CEST | Original file | - |
| article xml uploaded. | 5 April 2016 12:14 CEST | Original file | https://www.mdpi.com/1422-0067/17/4/500/xml |
| article pdf uploaded. | 5 April 2016 12:14 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/4/500/pdf |
