| article html file updated | 7 February 2020 22:32 CET | Update | https://www.mdpi.com/2073-4425/8/2/56 |
| article html file updated | 23 September 2019 03:11 CEST | Update | - |
| article html file updated | 4 May 2019 12:59 CEST | Update | - |
| article html file updated | 2 March 2017 10:42 CET | Update | - |
| article html file updated | 22 February 2017 10:11 CET | Original file | - |
| article xml uploaded. | 22 February 2017 10:10 CET | Original file | https://www.mdpi.com/2073-4425/8/2/56/xml |
| article pdf uploaded. | 22 February 2017 10:10 CET | Updated version of record | https://www.mdpi.com/2073-4425/8/2/56/pdf |
| article pdf uploaded. | 2 February 2017 09:00 CET | Updated version of record | https://www.mdpi.com/2073-4425/8/2/56/pdf-vor |
| article pdf uploaded. | 31 January 2017 15:18 CET | Updated version of record | https://www.mdpi.com/2073-4425/8/2/56/pdf-vor |
| article pdf uploaded. | 31 January 2017 11:51 CET | Version of Record | https://www.mdpi.com/2073-4425/8/2/56/pdf-vor |
