| article html file updated | 7 February 2020 06:34 CET | Update | https://www.mdpi.com/1422-0067/17/4/472 |
| article html file updated | 5 May 2019 20:04 CEST | Update | - |
| article html file updated | 27 March 2019 00:37 CET | Update | - |
| article html file updated | 28 April 2016 04:50 CEST | Update | - |
| article html file updated | 29 March 2016 12:36 CEST | Original file | - |
| article xml uploaded. | 29 March 2016 12:34 CEST | Original file | https://www.mdpi.com/1422-0067/17/4/472/xml |
| article pdf uploaded. | 29 March 2016 12:34 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/4/472/pdf |
