| article html file updated | 8 February 2020 03:23 CET | Update | https://www.mdpi.com/1422-0067/18/4/817 |
| article html file updated | 24 September 2019 06:40 CEST | Update | - |
| article html file updated | 4 May 2019 02:35 CEST | Update | - |
| article html file updated | 2 May 2017 06:07 CEST | Update | - |
| article html file updated | 13 April 2017 12:31 CEST | Original file | - |
| article xml uploaded. | 13 April 2017 12:28 CEST | Original file | https://www.mdpi.com/1422-0067/18/4/817/xml |
| article pdf uploaded. | 13 April 2017 12:28 CEST | Updated version of record | https://www.mdpi.com/1422-0067/18/4/817/pdf |
| article pdf uploaded. | 12 April 2017 11:40 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/4/817/pdf-vor |
