| article html file updated | 8 February 2020 00:25 CET | Update | https://www.mdpi.com/1999-4907/8/3/60 |
| article html file updated | 23 September 2019 13:46 CEST | Update | - |
| article html file updated | 4 May 2019 09:05 CEST | Update | - |
| article html file updated | 31 May 2017 11:48 CEST | Update | - |
| article xml uploaded. | 31 May 2017 11:47 CEST | Update | https://www.mdpi.com/1999-4907/8/3/60/xml |
| article pdf uploaded. | 31 May 2017 11:47 CEST | Updated version of record | https://www.mdpi.com/1999-4907/8/3/60/pdf |
| article html file updated | 28 March 2017 03:18 CEST | Update | - |
| article html file updated | 28 February 2017 09:12 CET | Original file | - |
| article xml uploaded. | 28 February 2017 09:11 CET | Original file | - |
| article pdf uploaded. | 28 February 2017 09:11 CET | Version of Record | https://www.mdpi.com/1999-4907/8/3/60/pdf-vor |
