@article{1103860122,
author = {Spencer, Thomas},
title = {The mass gap for the $P(\phi)\_{2}$ quantum field model with a strong external field},
journal = {Comm. Math. Phys.},
volume = {35},
number = {1},
year = {1974},
pages = { 63-76},
language = {en},
url = {http://dml.mathdoc.fr/item/1103860122}
}
Spencer, Thomas. The mass gap for the $P(\phi)_{2}$ quantum field model with a strong external field. Comm. Math. Phys., Tome 35 (1974) no. 1, pp. 63-76. http://gdmltest.u-ga.fr/item/1103860122/