\figure{hexangle.eps}{\epsfxsize}{The construction from Remark~\ref{hexa}}
-\rem
-The observation in~Theorem~\ref{mstmcc} was also used by Gustedt \cite{gustedt:parallel},
-to construct parallel version of the Contractive Bor\o{u}vka's algorithm applied
-to minor-closed classes.
-
\rem
The bound on the average degree needed to enforce a~$K_k$ minor, which we get from Theorem \ref{maderthm},
is very coarse. Kostochka \cite{kostochka:lbh} and independently Thomason \cite{thomason:efc}
by Pettie and Ramachandran \cite{pettie:minirand}, but so far only at the
expense of higher time complexity.
+Some of the algorithms for special classes of graphs also have their counterparts
+in the parallel world. Most notably the Contractive Bor\o{u}vka's algorithm
+for minor-closed graph classes (Theorem \ref{mstmcc}) has been parallized
+by Gustedt \cite{gustedt:parallel}.
+
\endpart