| article html file updated | 7 February 2020 23:19 CET | Update | https://www.mdpi.com/2073-4344/7/2/60 |
| article html file updated | 23 September 2019 07:29 CEST | Update | - |
| article html file updated | 4 May 2019 11:25 CEST | Update | - |
| article html file updated | 1 March 2017 07:58 CET | Update | - |
| article html file updated | 17 February 2017 02:08 CET | Update | - |
| article xml uploaded. | 17 February 2017 02:06 CET | Update | https://www.mdpi.com/2073-4344/7/2/60/xml |
| article pdf uploaded. | 17 February 2017 02:06 CET | Updated version of record | https://www.mdpi.com/2073-4344/7/2/60/pdf |
| article html file updated | 14 February 2017 09:51 CET | Original file | - |
| article xml uploaded. | 14 February 2017 09:50 CET | Update | - |
| article xml uploaded. | 14 February 2017 09:50 CET | Original file | - |
| article pdf uploaded. | 14 February 2017 09:50 CET | Version of Record | https://www.mdpi.com/2073-4344/7/2/60/pdf-vor |
