| article html file updated | 8 February 2020 02:21 CET | Update | https://www.mdpi.com/1999-4893/10/2/39 |
| article html file updated | 24 September 2019 00:50 CEST | Update | - |
| article html file updated | 4 May 2019 04:48 CEST | Update | - |
| article html file updated | 28 June 2017 12:24 CEST | Update | - |
| article html file updated | 31 March 2017 06:00 CEST | Original file | - |
| article xml uploaded. | 30 March 2017 15:17 CEST | Original file | https://www.mdpi.com/1999-4893/10/2/39/xml |
| article pdf uploaded. | 30 March 2017 15:17 CEST | Updated version of record | https://www.mdpi.com/1999-4893/10/2/39/pdf |
| article pdf uploaded. | 27 March 2017 14:23 CEST | Version of Record | https://www.mdpi.com/1999-4893/10/2/39/pdf-vor |
