| article html file updated | 8 February 2020 07:18 CET | Update | https://www.mdpi.com/2073-4409/6/2/13 |
| article html file updated | 25 September 2019 03:18 CEST | Update | - |
| article html file updated | 3 May 2019 19:19 CEST | Update | - |
| article html file updated | 27 October 2017 09:06 CEST | Update | - |
| article html file updated | 30 June 2017 05:38 CEST | Update | - |
| article html file updated | 5 June 2017 03:00 CEST | Original file | - |
| article xml uploaded. | 5 June 2017 02:59 CEST | Original file | https://www.mdpi.com/2073-4409/6/2/13/xml |
| article pdf uploaded. | 5 June 2017 02:59 CEST | Updated version of record | https://www.mdpi.com/2073-4409/6/2/13/pdf |
| article pdf uploaded. | 2 June 2017 13:02 CEST | Version of Record | https://www.mdpi.com/2073-4409/6/2/13/pdf-vor |
