@article{SIGMA_2024_20_a14,
     author = {Filipe Kelmer and Keti Tenenblat},
     title = {Superposition {Formulae} for the {Geometric} {B\"acklund} {Transformations} of the {Hyperbolic} and {Elliptic} {Sine-Gordon} and {Sinh-Gordon} {Equations}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2024},
     volume = {20},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2024_20_a14/}
}