| article html file updated | 7 February 2020 04:27 CET | Update | https://www.mdpi.com/2226-4787/4/1/13 |
| article html file updated | 6 May 2019 00:37 CEST | Update | - |
| article html file updated | 26 March 2019 20:29 CET | Update | - |
| article html file updated | 29 March 2016 11:53 CEST | Original file | - |
| article pdf uploaded. | 16 February 2016 04:30 CET | Updated version of record | https://www.mdpi.com/2226-4787/4/1/13/pdf |
| article xml uploaded. | 16 February 2016 04:30 CET | Original file | https://www.mdpi.com/2226-4787/4/1/13/xml |
| article pdf uploaded. | 6 February 2016 11:35 CET | Version of Record | https://www.mdpi.com/2226-4787/4/1/13/pdf-vor |
