TY - JOUR AU - Levine, Judah C2 - IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society Letters DA - 2016-04-04 LA - en PB - IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society Letters PY - 2016 TI - A Historical Perspective on the Development of the Allan Variances and their Strengths and Weaknesses ER -