Iwanik, A.: On norm attaining operators acting on $L^1$ - spaces.
(English).
In:
Frolík, Zdeněk (ed.): Abstracta. 9th Winter School on Abstract Analysis.
Czechoslovak Academy of Sciences, Praha, 1981.
pp. 85-88
Iwanik, A.: Extreme contractions on C(X) and $L^1(\mu)$.
(English).
In:
Frolík, Z. (ed.): Abstracta. 5th Winter School on Abstract Analysis.
Czechoslovak Academy of Sciences, Praha, 1977.
pp. 33-35