Abstract
You are back from that very long, marvellous journey. You have a thousand pictures, but your friends and relatives will stand just a few dozens. Choosing is a painful process, in particular when you cannot decide between the silent vastness of that desert and the idyllic picture of that tranquil, majestic lake. We are going to help.
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A preliminary version of this paper appeared in [1].
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Boldi, P., Chierichetti, F. & Vigna, S. Pictures from Mongolia. Extracting the Top Elements from a Partially Ordered Set. Theory Comput Syst 44, 269–288 (2009). https://doi.org/10.1007/s00224-008-9113-2
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DOI: https://doi.org/10.1007/s00224-008-9113-2