| article html file updated | 7 February 2020 22:34 CET | Update | https://www.mdpi.com/2073-4468/6/1/3 |
| article html file updated | 23 September 2019 03:21 CEST | Update | - |
| article html file updated | 4 May 2019 12:54 CEST | Update | - |
| article html file updated | 27 March 2017 09:40 CEST | Update | - |
| article html file updated | 21 February 2017 18:31 CET | Original file | - |
| article xml uploaded. | 21 February 2017 18:30 CET | Original file | https://www.mdpi.com/2073-4468/6/1/3/xml |
| article pdf uploaded. | 21 February 2017 18:30 CET | Updated version of record | https://www.mdpi.com/2073-4468/6/1/3/pdf |
| article pdf uploaded. | 2 February 2017 10:48 CET | Version of Record | https://www.mdpi.com/2073-4468/6/1/3/pdf-vor |
