The FontStruction “Opirus Semi-Serif”
(http://fontstruct.com/fontstructions/show/759209) by “opipik” is licensed
under a Creative Commons Attribution Share Alike license
(http://creativecommons.org/licenses/by-sa/3.0/).
“Opirus Semi-Serif” was originally cloned (copied) from the FontStruction
“Formal Roman” (http://fontstruct.com/fontstructions/show/322890) by
“caliopigio”, which is licensed under a Creative Commons Attribution Share
Alike license (http://creativecommons.org/licenses/by-sa/3.0/).