| article html file updated | 8 February 2020 02:34 CET | Update | https://www.mdpi.com/1422-0067/18/4/688 |
| article html file updated | 24 September 2019 02:02 CEST | Update | N/A |
| article html file updated | 4 May 2019 04:21 CEST | Update | N/A |
| article html file updated | 2 May 2017 05:45 CEST | Update | N/A |
| article html file updated | 30 March 2017 11:50 CEST | Original file | N/A |
| article xml uploaded. | 30 March 2017 11:48 CEST | Original file | https://www.mdpi.com/1422-0067/18/4/688/xml |
| article pdf uploaded. | 30 March 2017 11:48 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/4/688/pdf |
