| article html file updated | 8 February 2020 03:09 CET | Update | https://www.mdpi.com/1422-0067/18/4/776 |
| article html file updated | 24 September 2019 05:22 CEST | Update | - |
| article html file updated | 4 May 2019 03:04 CEST | Update | - |
| article html file updated | 2 May 2017 05:59 CEST | Update | - |
| article html file updated | 8 April 2017 08:07 CEST | Original file | - |
| article xml uploaded. | 8 April 2017 08:06 CEST | Update | https://www.mdpi.com/1422-0067/18/4/776/xml |
| article pdf uploaded. | 8 April 2017 08:06 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/4/776/pdf |
