On a contractivity condition in fixed point theory 
and the theory of selections

Wydawnictwa / Banach Center Publications / Wszystkie tomy

Pavel V. Semenov Banach Center Publications 77 (2007), 239-245 DOI: 10.4064/bc77-0-18

Pavel V. SemenovMoscow City Pedagogical University
Math. Dept.
2-nd Selskochozjastvenny pr. 4
Moscow 129226, Russia
e-mail