| article html file updated | 9 February 2020 06:45 CET | Update | https://www.mdpi.com/2225-1154/6/1/12 |
| article html file updated | 1 May 2019 18:11 CEST | Update | - |
| article html file updated | 17 April 2019 17:31 CEST | Update | - |
| article html file updated | 28 March 2019 23:34 CET | Update | - |
| article html file updated | 26 March 2018 15:43 CEST | Update | - |
| article html file updated | 20 February 2018 17:36 CET | Original file | - |
| article xml uploaded. | 20 February 2018 17:35 CET | Original file | https://www.mdpi.com/2225-1154/6/1/12/xml |
| article pdf uploaded. | 20 February 2018 17:35 CET | Updated version of record | https://www.mdpi.com/2225-1154/6/1/12/pdf |
| article pdf uploaded. | 15 February 2018 08:08 CET | Version of Record | https://www.mdpi.com/2225-1154/6/1/12/pdf-vor |
