- ("MARC" . "http://marc.info/?i=")
- ("Mail Archive, The" . "http://mid.mail-archive.com/")
- ("LKML" . "http://lkml.kernel.org/r/")
+ ("MARC" . "https://marc.info/?i=")
+ ("Mail Archive, The" . "https://mid.mail-archive.com/")
+ ("LKML" . "https://lkml.kernel.org/r/")