| article html file updated | 8 February 2020 00:25 CET | Update | https://www.mdpi.com/1999-4907/8/3/63 |
| article html file updated | 23 September 2019 13:47 CEST | Update | - |
| article html file updated | 4 May 2019 09:04 CEST | Update | - |
| article html file updated | 28 March 2017 03:28 CEST | Update | - |
| article html file updated | 28 February 2017 09:11 CET | Original file | - |
| article xml uploaded. | 28 February 2017 09:10 CET | Original file | https://www.mdpi.com/1999-4907/8/3/63/xml |
| article pdf uploaded. | 28 February 2017 09:10 CET | Version of Record | https://www.mdpi.com/1999-4907/8/3/63/pdf |
