| article html file updated | 9 February 2020 00:28 CET | Update | https://www.mdpi.com/2223-7747/6/4/63 |
| article html file updated | 29 September 2019 07:31 CEST | Update | N/A |
| article html file updated | 2 May 2019 07:44 CEST | Update | N/A |
| article html file updated | 18 April 2019 05:34 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:20 CET | Update | N/A |
| article html file updated | 19 December 2017 11:04 CET | Original file | N/A |
| article xml uploaded. | 19 December 2017 11:02 CET | Update | https://www.mdpi.com/2223-7747/6/4/63/xml |
| article xml uploaded. | 19 December 2017 11:02 CET | Original file | N/A |
| article pdf uploaded. | 19 December 2017 11:02 CET | Updated version of record | https://www.mdpi.com/2223-7747/6/4/63/pdf |
| article pdf uploaded. | 18 December 2017 16:55 CET | Version of Record | https://www.mdpi.com/2223-7747/6/4/63/pdf-vor |
