| article html file updated | 7 February 2020 07:17 CET | Update | https://www.mdpi.com/2226-4310/3/2/12 |
| article html file updated | 5 May 2019 18:36 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:55 CET | Update | N/A |
| article html file updated | 27 June 2016 12:06 CEST | Update | N/A |
| article html file updated | 14 April 2016 14:11 CEST | Original file | N/A |
| article xml uploaded. | 14 April 2016 14:10 CEST | Update | https://www.mdpi.com/2226-4310/3/2/12/xml |
| article pdf uploaded. | 14 April 2016 14:10 CEST | Version of Record | https://www.mdpi.com/2226-4310/3/2/12/pdf |
