| article html file updated | 8 February 2020 00:57 CET | Update | https://www.mdpi.com/1999-4907/8/3/72 |
| article html file updated | 23 September 2019 16:55 CEST | Update | - |
| article html file updated | 4 May 2019 07:50 CEST | Update | - |
| article html file updated | 28 March 2017 03:37 CEST | Update | - |
| article html file updated | 7 March 2017 15:12 CET | Original file | - |
| article xml uploaded. | 7 March 2017 15:11 CET | Original file | https://www.mdpi.com/1999-4907/8/3/72/xml |
| article pdf uploaded. | 7 March 2017 15:11 CET | Version of Record | https://www.mdpi.com/1999-4907/8/3/72/pdf |
