K Kato, Galois
cohomology of complete discrete valuation fields, from:
"Algebraic K–theory, Part II (Oberwolfach, 1980)",
Lecture Notes in Math. 967, Springer (1982) 215–238
MR689394
H Miki, On
Zp–extensions of complete p–adic power
series fields and function fields, J. Fac. Sci. Univ. Tokyo
Sect. IA Math. 21 (1974) 377–393 MR0364206