| article html file updated | 7 February 2020 07:34 CET | Update | https://www.mdpi.com/1422-0067/17/4/525 |
| article html file updated | 5 May 2019 18:01 CEST | Update | - |
| article html file updated | 27 March 2019 02:30 CET | Update | - |
| article html file updated | 28 April 2016 05:05 CEST | Update | - |
| article html file updated | 20 April 2016 15:27 CEST | Original file | - |
| article xml uploaded. | 20 April 2016 15:26 CEST | Original file | https://www.mdpi.com/1422-0067/17/4/525/xml |
| article pdf uploaded. | 20 April 2016 15:26 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/4/525/pdf |
