| article html file updated | 8 February 2020 02:15 CET | Update | https://www.mdpi.com/1422-0067/18/4/698 |
| article html file updated | 24 September 2019 00:16 CEST | Update | - |
| article html file updated | 4 May 2019 05:02 CEST | Update | - |
| article html file updated | 2 May 2017 05:47 CEST | Update | - |
| article html file updated | 27 March 2017 07:50 CEST | Original file | - |
| article xml uploaded. | 27 March 2017 07:48 CEST | Original file | https://www.mdpi.com/1422-0067/18/4/698/xml |
| article pdf uploaded. | 27 March 2017 07:48 CEST | Updated version of record | https://www.mdpi.com/1422-0067/18/4/698/pdf |
| article pdf uploaded. | 25 March 2017 10:58 CET | Version of Record | https://www.mdpi.com/1422-0067/18/4/698/pdf-vor |
