@article{10_4064_sm226_2_2,
     author = {Gegham Gevorkyan and Anna Kamont and Karen Keryan and Markus Passenbrunner},
     title = {Unconditionality of orthogonal spline systems in $H^1$},
     journal = {Studia Mathematica},
     pages = {123--154},
     year = {2015},
     volume = {226},
     number = {2},
     doi = {10.4064/sm226-2-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm226-2-2/}
}