| article html file updated | 7 February 2020 10:18 CET | Update | https://www.mdpi.com/2226-4310/3/2/17 |
| article html file updated | 5 May 2019 12:42 CEST | Update | N/A |
| article html file updated | 27 March 2019 07:44 CET | Update | N/A |
| article html file updated | 27 June 2016 12:09 CEST | Update | N/A |
| article html file updated | 17 June 2016 09:23 CEST | Original file | N/A |
| article xml uploaded. | 17 June 2016 09:22 CEST | Original file | https://www.mdpi.com/2226-4310/3/2/17/xml |
| article pdf uploaded. | 17 June 2016 09:22 CEST | Version of Record | https://www.mdpi.com/2226-4310/3/2/17/pdf |
