| article html file updated | 8 February 2020 02:32 CET | Update | https://www.mdpi.com/2220-9964/6/4/101 |
| article html file updated | 24 September 2019 01:53 CEST | Update | - |
| article html file updated | 4 May 2019 04:25 CEST | Update | - |
| article html file updated | 28 April 2017 08:13 CEST | Update | - |
| article html file updated | 30 March 2017 05:24 CEST | Original file | - |
| article xml uploaded. | 30 March 2017 05:23 CEST | Original file | https://www.mdpi.com/2220-9964/6/4/101/xml |
| article pdf uploaded. | 30 March 2017 05:23 CEST | Version of Record | https://www.mdpi.com/2220-9964/6/4/101/pdf |
