@article{MZ_1989__202_1_174077,
     author = {E.J. Ditters},
     title = {On the {Classification} of {Commutative} {Formal} {Group} {Laws} over {p-Hilbert} {Domains} and a {Finiteness} {Theorem} for {Higher} {Hasse-Witt} {Matrices.}},
     journal = {Mathematische Zeitschrift},
     pages = {83--110},
     publisher = {mathdoc},
     volume = {202},
     number = {1},
     year = {1989},
     zbl = {0655.14015},
     url = {http://geodesic.mathdoc.fr/item/MZ_1989__202_1_174077/}
}