Benjamin Doerr Amirhossein Rajabi Carsten Witt Simulated annealing is a polynomial-time approximation scheme for the minimum spanning tree problem. 1381-1389 2022 GECCO https://doi.org/10.1145/3512290.3528812 conf/gecco/2022 db/conf/gecco/gecco2022.html#DoerrRW22