| article html file updated | 9 February 2020 04:12 CET | Update | https://www.mdpi.com/1999-4907/9/2/55 |
| article html file updated | 30 September 2019 04:36 CEST | Update | N/A |
| article html file updated | 1 May 2019 23:51 CEST | Update | N/A |
| article html file updated | 17 April 2019 22:23 CEST | Update | N/A |
| article html file updated | 28 March 2019 18:04 CET | Update | N/A |
| article html file updated | 14 March 2018 09:24 CET | Update | N/A |
| article html file updated | 24 January 2018 16:28 CET | Original file | N/A |
| article xml uploaded. | 24 January 2018 16:26 CET | Original file | https://www.mdpi.com/1999-4907/9/2/55/xml |
| article pdf uploaded. | 24 January 2018 16:26 CET | Version of Record | https://www.mdpi.com/1999-4907/9/2/55/pdf |
