@article{CM_1986__59_1_15_0,
     author = {Jost, J\"urgen},
     title = {On the existence of harmonic maps from a surface into the real projective plane},
     journal = {Compositio Mathematica},
     pages = {15--19},
     publisher = {Martinus Nijhoff Publishers},
     volume = {59},
     number = {1},
     year = {1986},
     mrnumber = {850117},
     zbl = {0601.58026},
     language = {en},
     url = {http://www.numdam.org/item/CM_1986__59_1_15_0/}
}