\begin{equation}
D = \Bigl[\frac{4 \times (C_{sapwood} + C_{heartwood})}{WD.\pi.k_{allom2}}\Bigr]^{\frac{1}{(2+k_{allom3})}} 
H = k_{allom2} \times D^{k_{allom3}} 
CA =\min(k_{allom1} \times D^{k_{rp}},CA_{max})
\end{equation}
