| article html file updated | 7 February 2020 22:30 CET | Update | https://www.mdpi.com/2075-4701/7/2/38 |
| article html file updated | 4 May 2019 13:02 CEST | Update | N/A |
| article html file updated | 1 March 2017 03:43 CET | Update | N/A |
| article html file updated | 10 February 2017 11:29 CET | Original file | N/A |
| article xml uploaded. | 10 February 2017 11:28 CET | Original file | https://www.mdpi.com/2075-4701/7/2/38/xml |
| article pdf uploaded. | 10 February 2017 11:28 CET | Updated version of record | https://www.mdpi.com/2075-4701/7/2/38/pdf |
| article pdf uploaded. | 30 January 2017 17:07 CET | Version of Record | https://www.mdpi.com/2075-4701/7/2/38/pdf-vor |
