TY - ECHAP AU - J. Eberly CY - Boston, MA DO - 10.1007/978-1-4757-0671-0_2 PB - Springer US PP - Boston, MA PY - 1980 SN - 978-1-4757-0673-4 SP - 23 EP - 35 TI - Unified View of Spontaneous Emission in Several Theories of Radiation ER -