@misc{BrandstaedtDraganKoehler, author = {Brandst{\"a}dt, Andreas and Dragan, Feodor F. and K{\"o}hler, Ekkehard}, title = {Linear time algorithms for Hamiltonian problems on (claw,net)-free graphs}, series = {SIAM journal on computing}, volume = {30}, journal = {SIAM journal on computing}, number = {5}, issn = {0097-5397}, pages = {1662 -- 1677}, language = {en} } @misc{DraganKoehler, author = {Dragan, Feodor F. and K{\"o}hler, Ekkehard}, title = {An Approximation Algorithm for the Tree t-Spanner Problem on Unweighted Graphs via Generalized Chordal Graphs}, series = {Algorithmica}, volume = {69}, journal = {Algorithmica}, number = {4}, doi = {10.1007/s00453-013-9765-4}, pages = {884 -- 905}, language = {en} } @misc{DraganCorneilKoehleretal., author = {Dragan, Feodor F. and Corneil, Derek G. and K{\"o}hler, Ekkehard and Xiang, Yang}, title = {Collective additive tree spanners for circle graphs and polygonal graphs}, series = {Discrete Applied Mathematics}, volume = {160}, journal = {Discrete Applied Mathematics}, number = {12}, doi = {10.1016/j.dam.2012.03.036}, pages = {1717 -- 1729}, language = {en} } @misc{DraganKoehlerLeitert, author = {Dragan, Feodor F. and K{\"o}hler, Ekkehard and Leitert, Arne}, title = {Line-distortion, Bandwidth and Path-length of a graph}, series = {Algorithmica}, volume = {77}, journal = {Algorithmica}, number = {3}, issn = {0178-4617}, doi = {10.1007/s00453-015-0094-7}, pages = {686 -- 713}, language = {en} } @misc{DraganKoehlerAlrasheed, author = {Dragan, Feodor F. and K{\"o}hler, Ekkehard and Alrasheed, Hend}, title = {Eccentricity approximating trees}, series = {Discrete Applied Mathematics}, volume = {232}, journal = {Discrete Applied Mathematics}, issn = {0166-218X}, doi = {10.1016/j.dam.2017.07.017}, pages = {142 -- 156}, language = {en} }