| article html file updated | 7 February 2020 18:29 CET | Update | https://www.mdpi.com/2304-6732/3/4/60 |
| article html file updated | 4 May 2019 21:37 CEST | Update | - |
| article html file updated | 28 December 2016 11:35 CET | Update | - |
| article html file updated | 23 November 2016 11:10 CET | Original file | - |
| article xml uploaded. | 23 November 2016 11:08 CET | Update | https://www.mdpi.com/2304-6732/3/4/60/xml |
| article xml uploaded. | 23 November 2016 11:08 CET | Update | - |
| article xml uploaded. | 23 November 2016 11:08 CET | Original file | - |
| article pdf uploaded. | 23 November 2016 11:08 CET | Version of Record | https://www.mdpi.com/2304-6732/3/4/60/pdf |
