| article html file updated | 9 February 2020 05:44 CET | Update | https://www.mdpi.com/2073-4344/8/2/64 |
| article html file updated | 30 September 2019 14:04 CEST | Update | - |
| article html file updated | 1 May 2019 20:27 CEST | Update | - |
| article html file updated | 17 April 2019 19:30 CEST | Update | - |
| article html file updated | 28 March 2019 21:24 CET | Update | - |
| article html file updated | 14 March 2018 08:43 CET | Update | - |
| article html file updated | 7 February 2018 09:37 CET | Original file | - |
| article xml uploaded. | 7 February 2018 09:35 CET | Update | https://www.mdpi.com/2073-4344/8/2/64/xml |
| article xml uploaded. | 7 February 2018 09:35 CET | Original file | - |
| article pdf uploaded. | 7 February 2018 09:35 CET | Updated version of record | https://www.mdpi.com/2073-4344/8/2/64/pdf |
| article pdf uploaded. | 6 February 2018 18:57 CET | Version of Record | https://www.mdpi.com/2073-4344/8/2/64/pdf-vor |
