All the codes are available AS IS, and shall be used FOR RESEARCH PURPOSE only. Any COMMERCIAL USAGE of full codes or their parts without Authors' written consent is PROHIBITED. Modification and/or publishing of these codes or their parts in the public domain (for noncommercial purpose) is allowed and encouraged, provided that proper reference to the original Authorship is retained.
GF User Guide
Paper, which describes the analytical approximations implemented in this package: J.Phys.A 42, 2775203 (2009)
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