@article{GDZPPN002225506, title = {A Pseudo-Algebra of Observables for the Dirac Equation.}, journal = {Manuscripta mathematica}, volume = {43}, year = {1983}, pages = {77-106}, zbl = {0562.35079}, url = {http://dml.mathdoc.fr/item/GDZPPN002225506} }
Cordes, Heinz O. A Pseudo-Algebra of Observables for the Dirac Equation.. Manuscripta mathematica, Tome 43 (1983) pp. 77-106. http://gdmltest.u-ga.fr/item/GDZPPN002225506/