| article html file updated | 8 February 2020 07:59 CET | Update | https://www.mdpi.com/1999-4893/10/2/68 |
| article html file updated | 25 September 2019 06:51 CEST | Update | - |
| article html file updated | 3 May 2019 18:01 CEST | Update | - |
| article html file updated | 28 June 2017 12:27 CEST | Update | - |
| article html file updated | 13 June 2017 12:41 CEST | Original file | - |
| article xml uploaded. | 13 June 2017 12:40 CEST | Original file | https://www.mdpi.com/1999-4893/10/2/68/xml |
| article pdf uploaded. | 13 June 2017 12:40 CEST | Updated version of record | https://www.mdpi.com/1999-4893/10/2/68/pdf |
| article pdf uploaded. | 10 June 2017 12:45 CEST | Version of Record | https://www.mdpi.com/1999-4893/10/2/68/pdf-vor |
