TY  - JOUR
AU  - Thomas Kappeler
AU  - Yannick Widmer
TI  - On spectral properties of the $L$ operator in the Lax pair of the sine-Gordon equation
JO  - Žurnal matematičeskoj fiziki, analiza, geometrii
PY  - 2018
SP  - 452
EP  - 509
VL  - 14
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JMAG_2018_14_a2/
LA  - en
ID  - JMAG_2018_14_a2
ER  -