| article html file updated | 9 February 2020 04:52 CET | Update | https://www.mdpi.com/2226-471X/3/1/2 |
| article html file updated | 1 May 2019 22:26 CEST | Update | N/A |
| article html file updated | 17 April 2019 21:08 CEST | Update | N/A |
| article html file updated | 28 March 2019 19:30 CET | Update | N/A |
| article html file updated | 30 January 2018 12:12 CET | Original file | N/A |
| article xml uploaded. | 30 January 2018 12:11 CET | Original file | https://www.mdpi.com/2226-471X/3/1/2/xml |
| article pdf uploaded. | 30 January 2018 12:11 CET | Version of Record | https://www.mdpi.com/2226-471X/3/1/2/pdf |
