| article html file updated | 8 February 2020 03:06 CET | Update | https://www.mdpi.com/2220-9964/6/4/113 |
| article html file updated | 24 September 2019 05:10 CEST | Update | N/A |
| article html file updated | 4 May 2019 03:08 CEST | Update | N/A |
| article html file updated | 28 April 2017 08:16 CEST | Update | N/A |
| article html file updated | 10 April 2017 06:20 CEST | Original file | N/A |
| article xml uploaded. | 10 April 2017 06:19 CEST | Original file | https://www.mdpi.com/2220-9964/6/4/113/xml |
| article pdf uploaded. | 10 April 2017 06:19 CEST | Updated version of record | https://www.mdpi.com/2220-9964/6/4/113/pdf |
| article pdf uploaded. | 7 April 2017 16:06 CEST | Version of Record | https://www.mdpi.com/2220-9964/6/4/113/pdf-vor |
