| article html file updated | 9 February 2020 05:43 CET | Update | https://www.mdpi.com/2073-4352/8/2/87 |
| article html file updated | 30 September 2019 13:56 CEST | Update | - |
| article html file updated | 1 May 2019 20:30 CEST | Update | - |
| article html file updated | 17 April 2019 19:33 CEST | Update | - |
| article html file updated | 28 March 2019 21:21 CET | Update | - |
| article html file updated | 14 March 2018 09:06 CET | Update | - |
| article html file updated | 6 February 2018 16:41 CET | Original file | - |
| article xml uploaded. | 6 February 2018 16:40 CET | Update | https://www.mdpi.com/2073-4352/8/2/87/xml |
| article xml uploaded. | 6 February 2018 16:40 CET | Original file | - |
| article pdf uploaded. | 6 February 2018 16:40 CET | Version of Record | https://www.mdpi.com/2073-4352/8/2/87/pdf |
