TY - BOOK AU - Nakanishi,N. AU - Ojima,I. TI - Covariant operator formalism of gauge theories and quantum gravity SN - 9971502380 PY - 1990/// CY - Singapore PB - World Scientific KW - Gauge fields (Physics) KW - Quantum gravity KW - Quantum field theory N1 - Includes bibliographical references and index ER -