| article html file updated | 8 February 2020 02:31 CET | Update | https://www.mdpi.com/1422-0067/18/4/726 |
| article html file updated | 24 September 2019 01:45 CEST | Update | - |
| article html file updated | 4 May 2019 04:27 CEST | Update | - |
| article html file updated | 2 May 2017 05:51 CEST | Update | - |
| article html file updated | 30 March 2017 05:33 CEST | Original file | - |
| article xml uploaded. | 30 March 2017 05:32 CEST | Original file | https://www.mdpi.com/1422-0067/18/4/726/xml |
| article pdf uploaded. | 30 March 2017 05:32 CEST | Updated version of record | https://www.mdpi.com/1422-0067/18/4/726/pdf |
| article pdf uploaded. | 29 March 2017 14:19 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/4/726/pdf-vor |
