@article{10_4064_cm_26_1_313_322,
     author = {Abraham Goetz},
     title = {On the algebraic structure of the process of forming subsequences},
     journal = {Colloquium Mathematicum},
     pages = {313--322},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1972},
     doi = {10.4064/cm-26-1-313-322},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-26-1-313-322/}
}