| article html file updated | 7 February 2020 16:40 CET | Update | https://www.mdpi.com/1422-0067/17/10/1721 |
| article html file updated | 5 May 2019 01:04 CEST | Update | - |
| article html file updated | 31 October 2016 07:57 CET | Update | - |
| article html file updated | 20 October 2016 04:23 CEST | Original file | - |
| article xml uploaded. | 20 October 2016 04:22 CEST | Original file | https://www.mdpi.com/1422-0067/17/10/1721/xml |
| article pdf uploaded. | 20 October 2016 04:22 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/10/1721/pdf |
