| article html file updated | 7 February 2020 04:25 CET | Update | https://www.mdpi.com/2220-9964/5/2/14 |
| article html file updated | 6 May 2019 00:42 CEST | Update | N/A |
| article html file updated | 26 March 2019 20:24 CET | Original file | N/A |
| article pdf uploaded. | 15 February 2016 09:49 CET | Updated version of record | https://www.mdpi.com/2220-9964/5/2/14/pdf |
| article xml uploaded. | 15 February 2016 09:49 CET | Original file | https://www.mdpi.com/2220-9964/5/2/14/xml |
| article pdf uploaded. | 6 February 2016 09:32 CET | Version of Record | https://www.mdpi.com/2220-9964/5/2/14/pdf-vor |
