| article html file updated | 7 February 2020 22:56 CET | Update | https://www.mdpi.com/2075-5309/7/1/12 |
| article html file updated | 23 September 2019 05:26 CEST | Update | - |
| article html file updated | 4 May 2019 12:10 CEST | Update | - |
| article html file updated | 29 March 2017 09:37 CEST | Update | - |
| article html file updated | 20 February 2017 11:03 CET | Original file | - |
| article xml uploaded. | 20 February 2017 11:01 CET | Original file | https://www.mdpi.com/2075-5309/7/1/12/xml |
| article pdf uploaded. | 20 February 2017 11:01 CET | Updated version of record | https://www.mdpi.com/2075-5309/7/1/12/pdf |
| article pdf uploaded. | 8 February 2017 16:48 CET | Version of Record | https://www.mdpi.com/2075-5309/7/1/12/pdf-vor |
