@article{MTA_2019_4_2_a5,
     author = {Shenglong Hu},
     title = {An elementary proof for the exact relaxation for rank one moment matrices in multi-polynomial {SOS} relaxation},
     journal = {Minimax theory and its applications},
     year = {2019},
     volume = {4},
     number = {2},
     zbl = {1450.49004},
     url = {http://geodesic.mathdoc.fr/item/MTA_2019_4_2_a5/}
}