| article html file updated | 7 February 2020 05:34 CET | Update | https://www.mdpi.com/2225-1146/4/1/12 |
| article html file updated | 5 May 2019 22:11 CEST | Update | - |
| article html file updated | 26 March 2019 22:48 CET | Update | - |
| article html file updated | 14 March 2018 09:59 CET | Original file | - |
| article pdf uploaded. | 23 August 2017 03:48 CEST | Updated version of record | https://www.mdpi.com/2225-1146/4/1/12/pdf |
| article pdf uploaded. | 10 March 2016 07:20 CET | Updated version of record | https://www.mdpi.com/2225-1146/4/1/12/pdf-vor |
| article xml uploaded. | 10 March 2016 07:20 CET | Update | https://www.mdpi.com/2225-1146/4/1/12/xml |
| article pdf uploaded. | 8 March 2016 09:28 CET | Version of Record | https://www.mdpi.com/2225-1146/4/1/12/pdf-vor |
