@article{MET_1969__14_175390,
     author = {P.H. Randolph},
     title = {Optimal stopping rules for multinomial {Observations}},
     journal = {Metrika},
     pages = {48--61},
     publisher = {mathdoc},
     volume = {14},
     year = {1969},
     zbl = {0164.49203},
     url = {http://geodesic.mathdoc.fr/item/MET_1969__14_175390/}
}