| article html file updated | 7 February 2020 23:37 CET | Update | https://www.mdpi.com/2075-4701/7/2/60 |
| article html file updated | 23 September 2019 09:12 CEST | Update | - |
| article html file updated | 4 May 2019 10:49 CEST | Update | - |
| article html file updated | 1 March 2017 03:55 CET | Update | - |
| article html file updated | 17 February 2017 12:31 CET | Update | - |
| article html file updated | 17 February 2017 12:31 CET | Update | - |
| article html file updated | 17 February 2017 12:31 CET | Original file | - |
| article xml uploaded. | 17 February 2017 12:29 CET | Update | https://www.mdpi.com/2075-4701/7/2/60/xml |
| article xml uploaded. | 17 February 2017 12:29 CET | Original file | - |
| article pdf uploaded. | 17 February 2017 12:29 CET | Version of Record | https://www.mdpi.com/2075-4701/7/2/60/pdf |
