| article html file updated | 9 February 2020 01:53 CET | Update | https://www.mdpi.com/2227-7072/6/1/7 |
| article html file updated | 29 September 2019 15:39 CEST | Update | N/A |
| article html file updated | 2 May 2019 04:40 CEST | Update | N/A |
| article html file updated | 18 April 2019 02:43 CEST | Update | N/A |
| article html file updated | 28 March 2019 12:50 CET | Update | N/A |
| article html file updated | 26 March 2018 15:41 CEST | Update | N/A |
| article html file updated | 3 January 2018 13:47 CET | Original file | N/A |
| article xml uploaded. | 3 January 2018 13:46 CET | Original file | https://www.mdpi.com/2227-7072/6/1/7/xml |
| article pdf uploaded. | 3 January 2018 13:46 CET | Version of Record | https://www.mdpi.com/2227-7072/6/1/7/pdf |
