| article html file updated | 8 February 2020 03:44 CET | Update | https://www.mdpi.com/1422-0067/18/4/850 |
| article html file updated | 24 September 2019 08:37 CEST | Update | - |
| article html file updated | 4 May 2019 01:56 CEST | Update | - |
| article html file updated | 2 May 2017 06:13 CEST | Update | - |
| article html file updated | 17 April 2017 11:30 CEST | Original file | - |
| article xml uploaded. | 17 April 2017 11:28 CEST | Original file | https://www.mdpi.com/1422-0067/18/4/850/xml |
| article pdf uploaded. | 17 April 2017 11:28 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/4/850/pdf |
