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+Copyright (C) 2013-2014, NumFOCUS Foundation.
+All rights reserved.
+
+This library is derived, with permission, from the International
+Astronomical Union's "Standards of Fundamental Astronomy" library,
+available from http://www.iausofa.org.
+
+The ERFA version is intended to retain identical
+functionality to the SOFA library, but made distinct through
+different function and file names, as set out in the SOFA license
+conditions. The SOFA original has a role as a reference standard
+for the IAU and IERS, and consequently redistribution is permitted only
+in its unaltered state. The ERFA version is not subject to this
+restriction and therefore can be included in distributions which do not
+support the concept of "read only" software.
+
+Although the intent is to replicate the SOFA API (other than replacement of
+prefix names) and results (with the exception of bugs; any that are
+discovered will be fixed), SOFA is not responsible for any errors found
+in this version of the library.
+
+If you wish to acknowledge the SOFA heritage, please acknowledge that
+you are using a library derived from SOFA, rather than SOFA itself.
+
+
+TERMS AND CONDITIONS
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1 Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2 Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+3 Neither the name of the Standards Of Fundamental Astronomy Board, the
+   International Astronomical Union nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.