| article html file updated | 7 February 2020 23:39 CET | Update | https://www.mdpi.com/2073-4344/7/2/68 |
| article html file updated | 23 September 2019 09:22 CEST | Update | - |
| article html file updated | 4 May 2019 10:45 CEST | Update | - |
| article html file updated | 1 March 2017 08:01 CET | Update | - |
| article html file updated | 18 February 2017 10:04 CET | Original file | - |
| article xml uploaded. | 18 February 2017 10:03 CET | Update | https://www.mdpi.com/2073-4344/7/2/68/xml |
| article pdf uploaded. | 18 February 2017 10:03 CET | Updated version of record | https://www.mdpi.com/2073-4344/7/2/68/pdf |
| article pdf uploaded. | 18 February 2017 09:02 CET | Updated version of record | https://www.mdpi.com/2073-4344/7/2/68/pdf-vor |
| article xml uploaded. | 17 February 2017 11:55 CET | Update | - |
| article xml uploaded. | 17 February 2017 11:55 CET | Original file | - |
| article pdf uploaded. | 17 February 2017 11:55 CET | Version of Record | https://www.mdpi.com/2073-4344/7/2/68/pdf-vor |
