TY - RPRT TI - A NASREM implementation of position determination from motion AU - Chaconas, Karen AU - Kelmar, Laura AU - Nashman, Marilyn PY - 1990 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 90-4293 DO - 10.6028/NIST.IR.90-4293 ER -