“…Finishing this section it is perhaps worth to mention that besides Lasota's seminal papers [16,17] on constrictivity, essential contribution to this topic was added by Komornik, Li, Yorke, Sine, Emel'yanov, Wolff, Miklavčič and Bartoszek (cf. [1,2,5,7,[11][12][13][14]17,20,22]).…”