| article html file updated | 8 February 2020 02:27 CET | Update | https://www.mdpi.com/1999-4907/8/4/101 |
| article html file updated | 24 September 2019 01:22 CEST | Update | - |
| article html file updated | 4 May 2019 04:35 CEST | Update | - |
| article html file updated | 28 April 2017 06:39 CEST | Update | - |
| article html file updated | 29 March 2017 08:20 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 08:18 CEST | Original file | https://www.mdpi.com/1999-4907/8/4/101/xml |
| article pdf uploaded. | 29 March 2017 08:18 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/4/101/pdf |
