| article html file updated | 8 February 2020 02:12 CET | Update | https://www.mdpi.com/2071-1050/9/4/488 |
| article html file updated | 24 September 2019 00:01 CEST | Update | - |
| article html file updated | 4 May 2019 05:08 CEST | Update | - |
| article html file updated | 28 April 2017 10:43 CEST | Update | - |
| article html file updated | 27 March 2017 14:29 CEST | Original file | - |
| article xml uploaded. | 27 March 2017 14:28 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/488/xml |
| article pdf uploaded. | 27 March 2017 14:28 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/488/pdf |
| article pdf uploaded. | 24 March 2017 12:46 CET | Version of Record | https://www.mdpi.com/2071-1050/9/4/488/pdf-vor |
