@article{10_4064_cm130_2_8,
     author = {Alfred Witkowski},
     title = {Optimal weighted harmonic interpolations
 between {Seiffert} means},
     journal = {Colloquium Mathematicum},
     pages = {265--279},
     publisher = {mathdoc},
     volume = {130},
     number = {2},
     year = {2013},
     doi = {10.4064/cm130-2-8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm130-2-8/}
}