@article{10_4064_ap95_2_3,
     author = {W. M. Mikulski},
     title = {Uniqueness results for operators in the variational sequence},
     journal = {Annales Polonici Mathematici},
     pages = {125--133},
     publisher = {mathdoc},
     volume = {95},
     number = {2},
     year = {2009},
     doi = {10.4064/ap95-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap95-2-3/}
}