| article html file updated | 7 February 2020 07:13 CET | Update | https://www.mdpi.com/1422-0067/17/4/552 |
| article html file updated | 5 May 2019 18:43 CEST | Update | - |
| article html file updated | 27 March 2019 01:48 CET | Update | - |
| article html file updated | 28 April 2016 05:14 CEST | Update | - |
| article html file updated | 13 April 2016 13:17 CEST | Original file | - |
| article xml uploaded. | 13 April 2016 13:16 CEST | Original file | https://www.mdpi.com/1422-0067/17/4/552/xml |
| article pdf uploaded. | 13 April 2016 13:16 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/4/552/pdf |
