| article html file updated | 7 February 2020 07:20 CET | Update | https://www.mdpi.com/2311-5521/1/2/13 |
| article html file updated | 5 May 2019 18:30 CEST | Update | - |
| article html file updated | 27 March 2019 02:00 CET | Update | - |
| article html file updated | 27 October 2017 10:20 CEST | Update | - |
| article html file updated | 18 April 2016 13:44 CEST | Update | - |
| article html file updated | 15 April 2016 11:55 CEST | Original file | - |
| article xml uploaded. | 15 April 2016 11:54 CEST | Original file | https://www.mdpi.com/2311-5521/1/2/13/xml |
| article pdf uploaded. | 15 April 2016 11:54 CEST | Version of Record | https://www.mdpi.com/2311-5521/1/2/13/pdf |
