| article html file updated | 7 February 2020 19:00 CET | Update | https://www.mdpi.com/2311-553X/2/4/13 |
| article html file updated | 22 September 2019 08:28 CEST | Update | - |
| article html file updated | 4 May 2019 20:31 CEST | Update | - |
| article html file updated | 30 December 2016 05:59 CET | Update | - |
| article html file updated | 2 December 2016 10:52 CET | Original file | - |
| article xml uploaded. | 2 December 2016 10:51 CET | Original file | https://www.mdpi.com/2311-553X/2/4/13/xml |
| article pdf uploaded. | 2 December 2016 10:51 CET | Version of Record | https://www.mdpi.com/2311-553X/2/4/13/pdf |
