| article html file updated | 8 February 2020 23:21 CET | Update | https://www.mdpi.com/2304-6740/5/4/89 |
| article html file updated | 29 September 2019 00:58 CEST | Update | - |
| article html file updated | 2 May 2019 10:11 CEST | Update | - |
| article html file updated | 18 April 2019 07:50 CEST | Update | - |
| article html file updated | 2 January 2018 13:57 CET | Update | - |
| article html file updated | 6 December 2017 14:09 CET | Original file | - |
| article xml uploaded. | 6 December 2017 14:08 CET | Original file | https://www.mdpi.com/2304-6740/5/4/89/xml |
| article pdf uploaded. | 6 December 2017 14:08 CET | Version of Record | https://www.mdpi.com/2304-6740/5/4/89/pdf |
