| article html file updated | 8 February 2020 23:21 CET | Update | https://www.mdpi.com/2304-6740/5/4/88 |
| article html file updated | 29 September 2019 01:03 CEST | Update | - |
| article html file updated | 2 May 2019 10:09 CEST | Update | - |
| article html file updated | 18 April 2019 07:48 CEST | Update | - |
| article html file updated | 2 January 2018 13:57 CET | Update | - |
| article html file updated | 6 December 2017 15:44 CET | Original file | - |
| article xml uploaded. | 6 December 2017 15:43 CET | Original file | https://www.mdpi.com/2304-6740/5/4/88/xml |
| article pdf uploaded. | 6 December 2017 15:43 CET | Version of Record | https://www.mdpi.com/2304-6740/5/4/88/pdf |
