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Line 59: ==External links== * {{cite journal \|doi=10.4249/scholarpedia.8508\|title=Nonlinear Sigma model\|year=2009\|last1=Ketov\|first1=Sergei\|journal=Scholarpedia\|volume=4\|issue=1\|page=8508\|bibcode=2009SchpJ...4.8508K\|doi-access=free}} * {{cite journal \|doi=10.1023/A:1021009008129\|year=2002\|last1=Kulshreshtha\|first1=U.\|last2=Kulshreshtha\|first2=D. S.\|s2cid=115710780\|title=Front-Form Hamiltonian, Path Integral, and BRST Formulations of the Nonlinear Sigma Model\|journal=International Journal of Theoretical Physics\|volume=41\|issue=10\|pages=1941–1956}}

Non-linear sigma model: Difference between revisions