E. Hafner

Quartz Crystal Measurements

E. Hafner, A. Ballato, 1970 .

The Role of Crystal Parameters in Circuit Design

E. Hafner, 1968 .

A NEW METHOD TO SIMPLIFY BRIDGE TYPE MEASUREMENTS ON QUARTZ CRYSTAL UNITS

E. Hafner, 1957 .

Automatic Microcircuit Bridge for Measurements on Quartz Crystal Units

E. Hafner, G. Malinowski, 1978 .

The effects of noise on crystal oscillators

E. Hafner, E. Hafner, E. Hafner, 1965 .

First‐trimester placental volume as a marker for chromosomal anomalies: preliminary results from an unselected population

E. Hafner, E. Hafner, M. Metzenbauer, 2002, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.