Artur Czumaj Funda Ergün Lance Fortnow Avner Magen Ilan Newman Ronitt Rubinfeld Christian Sohler Approximating the Weight of the Euclidean Minimum Spanning Tree in Sublinear Time. 91-109 2005 35 SIAM J. Comput. 1 http://epubs.siam.org/SICOMP/volume-35/art_43529.html db/journals/siamcomp/siamcomp35.html#CzumajEFMNRS05