| article html file updated | 8 February 2020 16:00 CET | Update | https://www.mdpi.com/2305-6320/4/3/68 |
| article html file updated | 27 September 2019 02:25 CEST | Update | - |
| article html file updated | 3 May 2019 02:20 CEST | Update | - |
| article html file updated | 30 September 2017 15:39 CEST | Update | - |
| article html file updated | 12 September 2017 22:09 CEST | Original file | - |
| article xml uploaded. | 12 September 2017 22:08 CEST | Original file | https://www.mdpi.com/2305-6320/4/3/68/xml |
| article pdf uploaded. | 12 September 2017 22:08 CEST | Updated version of record | https://www.mdpi.com/2305-6320/4/3/68/pdf |
| article pdf uploaded. | 12 September 2017 11:53 CEST | Version of Record | - |
