@article{1103841679,
author = {Lehmann, H. and Pohlmeyer, K.},
title = {A class of field theories in two-dimensional space-time with a $U\_{1}\times U\_{1}$ symmetry},
journal = {Comm. Math. Phys.},
volume = {12},
number = {1},
year = {1969},
pages = { 78-88},
language = {en},
url = {http://dml.mathdoc.fr/item/1103841679}
}
Lehmann, H.; Pohlmeyer, K. A class of field theories in two-dimensional space-time with a $U_{1}\times U_{1}$ symmetry. Comm. Math. Phys., Tome 12 (1969) no. 1, pp. 78-88. http://gdmltest.u-ga.fr/item/1103841679/