@article{JEMS_2014_16_6_a0,
     author = {Tianling Jin and YanYan Li and Jingang Xiong},
     title = {On a fractional {Nirenberg} problem, part {I:} blow up analysis and compactness of solutions},
     journal = {Journal of the European Mathematical Society},
     pages = {1111--1171},
     publisher = {mathdoc},
     volume = {16},
     number = {6},
     year = {2014},
     doi = {10.4171/jems/456},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/456/}
}