@article{10_4064_sm_58_2_129_139,
     author = {R. Kirk and J. Crenshaw},
     title = {Extension of real-valued \ensuremath{\alpha}-additive set functions},
     journal = {Studia Mathematica},
     pages = {129--139},
     publisher = {mathdoc},
     volume = {58},
     number = {2},
     year = {1976},
     doi = {10.4064/sm-58-2-129-139},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-58-2-129-139/}
}