Introduction to VDIF
VDIF Introduction (pdf) - 25 Jun 2009
VLBI Data Interface Format (VDIF) Specification
VDIF Specification 1.0 (pdf) - 24 Aug 2009
VDIF Extended-Data Versions
VDIF Extension NICT Version 1 (pdf) - 31 Jul 2009
(To register an EDV, please contact awhitney at haystack(dot)mit(dot)edu)