| article html file updated | 8 February 2020 12:25 CET | Update | https://www.mdpi.com/2226-471X/2/3/12 |
| article html file updated | 26 September 2019 06:32 CEST | Update | - |
| article html file updated | 3 May 2019 09:14 CEST | Update | - |
| article html file updated | 27 March 2019 18:29 CET | Update | - |
| article html file updated | 31 July 2017 14:05 CEST | Original file | - |
| article xml uploaded. | 31 July 2017 14:03 CEST | Original file | https://www.mdpi.com/2226-471X/2/3/12/xml |
| article pdf uploaded. | 31 July 2017 14:03 CEST | Version of Record | https://www.mdpi.com/2226-471X/2/3/12/pdf |
