| article html file updated | 7 February 2020 22:19 CET | Update | https://www.mdpi.com/2075-4701/7/2/37 |
| article html file updated | 23 September 2019 02:02 CEST | Update | N/A |
| article html file updated | 4 May 2019 13:25 CEST | Update | N/A |
| article html file updated | 1 March 2017 03:43 CET | Update | N/A |
| article html file updated | 27 January 2017 11:21 CET | Original file | N/A |
| article xml uploaded. | 27 January 2017 11:20 CET | Update | https://www.mdpi.com/2075-4701/7/2/37/xml |
| article xml uploaded. | 27 January 2017 11:19 CET | Original file | N/A |
| article pdf uploaded. | 27 January 2017 11:19 CET | Version of Record | https://www.mdpi.com/2075-4701/7/2/37/pdf |
