@article{SMJ2_2007_33_4_a5,
     author = {Draganov, Borislav and Ivanov, Kamen},
     title = {Equivalence {Between} {K-functionals} {Based} on {Continuous} {Linear} {Transforms}},
     journal = {Serdica Mathematical Journal},
     pages = {475--494},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2007_33_4_a5/}
}