| article html file updated | 7 February 2020 04:22 CET | Update | https://www.mdpi.com/2079-9284/3/1/4 |
| article html file updated | 6 May 2019 00:46 CEST | Update | N/A |
| article html file updated | 26 March 2019 20:19 CET | Original file | N/A |
| article pdf uploaded. | 16 February 2016 14:22 CET | Updated version of record | https://www.mdpi.com/2079-9284/3/1/4/pdf |
| article xml uploaded. | 16 February 2016 14:22 CET | Update | https://www.mdpi.com/2079-9284/3/1/4/xml |
| article pdf uploaded. | 15 February 2016 06:44 CET | Updated version of record | https://www.mdpi.com/2079-9284/3/1/4/pdf-vor |
| article xml uploaded. | 15 February 2016 06:44 CET | Original file | N/A |
| article pdf uploaded. | 6 February 2016 03:20 CET | Version of Record | https://www.mdpi.com/2079-9284/3/1/4/pdf-vor |
