@article {IOPORT.05987727, author = {Dellamonica, Domingos jun. and R\"odl, Vojt\v{e}ch}, title = {A note on Thomassen's conjecture.}, year = {2011}, journal = {Journal of Combinatorial Theory. Series B}, volume = {101}, number = {6}, issn = {0095-8956}, pages = {509-515}, publisher = {Elsevier Science (Academic Press), San Diego, CA}, doi = {10.1016/j.jctb.2011.04.002}, abstract = {Summary: In 1983 {\it C. Thomassen} [J. Comb. Theory, Ser. B 35, 129--141 (1983; Zbl 0537.05034)] conjectured that for every $k,g\in N$ there exists $d$ such that any graph with average degree at least $d$ contains a subgraph with average degree at least $k$ and girth at least $g$. A result of {\it L. Pyber}, {\it V. R\"odl} and {\it E. Szemer\'edi} [J. Comb. Theory, Ser. B 63, No.\,1, 41--54 (1995; Zbl 0822.05037)] implies that the conjecture is true for every graph $G$ with average $d(G) \geqslant c_{k,g} \log \Delta (G)$. We strengthen this and show that the conjecture holds for every graph $G$ with average $D(G) \geqslant \alpha (\log \log \Delta (G))^\beta$ for some constants $\alpha , \beta $ depending on $k$ and $g$.}, identifier = {05987727}, }