@article{05555886, title = {B\"acklund transformations for first and second Painlev\'e hierarchies.}, journal = {SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]}, volume = {5}, year = {2009}, doi = {10.3842/SIGMA.2009.024}, zbl = {1195.34137}, language = {en}, url = {http://dml.mathdoc.fr/item/05555886} }
Sakka, Ayman Hashem. Bäcklund transformations for first and second Painlevé hierarchies.. SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only], Tome 5 (2009) . doi : 10.3842/SIGMA.2009.024. http://gdmltest.u-ga.fr/item/05555886/