@article{SF_1993__46_1_135217,
     author = {M. Anderson},
     title = {Product integrals in strongly differentiate  power associative groupoids.},
     journal = {Semigroup forum},
     pages = {109--115},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {1993},
     zbl = {0802.47037},
     url = {http://geodesic.mathdoc.fr/item/SF_1993__46_1_135217/}
}