TY - GEN AU - Julian Schwinger C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1952-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.2188 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1952 TI - Quantum dynamics ::part I ER -