Authors:
Alexander Fischer [aut, cre]
,
David Roodman [aut]
,
Achim Zeileis [ctb] (Author of included sandwich fragments)
,
Nathaniel Graham [ctb] (Contributor to included sandwich fragments)
,
Susanne Koell [ctb] (Contributor to included sandwich fragments)
,
Laurent Berge [ctb] (Author of included fixest fragments)
,
Sebastian Krantz [ctb]