| article html file updated | 8 February 2020 21:01 CET | Update | https://www.mdpi.com/2079-9268/7/4/28 |
| article html file updated | 28 September 2019 10:28 CEST | Update | N/A |
| article html file updated | 2 May 2019 15:21 CEST | Update | N/A |
| article html file updated | 13 November 2017 13:32 CET | Original file | N/A |
| article xml uploaded. | 13 November 2017 13:31 CET | Original file | https://www.mdpi.com/2079-9268/7/4/28/xml |
| article pdf uploaded. | 13 November 2017 13:31 CET | Updated version of record | https://www.mdpi.com/2079-9268/7/4/28/pdf |
| article pdf uploaded. | 13 November 2017 10:53 CET | Version of Record | N/A |
