Some Soviet animators apparently were influenced by the aesthetics of Yellow Submarine and you can watch the evidence below. Thanks for the info, Russian Wikipedia.
A Box with Secret / Шкатулка с секретом (1976). Director: Valery Ugarov
http://www.youtube.com/watch?v=8OgMiuKC_Ds
Merry-Go-Round 1. Inattentive Giovanni / Веселая карусель N°1. Рассеянный Джованни (1969). Director: Anatoli Petrov. Starts at 1.32 in the video, but I think you will want to watch the first one, too!
http://www.youtube.com/watch?v=fEhfUCYQtrM
Merry-Go-Round 5. This movie is about you, isn’t it? / Веселая карусель N°5. Не про тебя ли этот фильм? (1973)
The Daily Psychedelic Video 
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