$\begin{figure} \par\includegraphics[width=8cm,clip]{2451f1.eps}\end{figure}$ Figure 1: Left: collocation of the MHD variables in a cell [ ijk]. Right: locations of the electric field components and components of the electric field flux tensor.
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In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{2451f3.ps} \end{figure}$ Figure 3: Non-rotating collaps: grey-scale representation of the density structure ( $\log\varrho_{\rm min}=-13.91$ , $\log\varrho_{\rm max}=-9.28$ ) and velocity field in the x-y plane.
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In the text

$\begin{figure} \par\includegraphics[width=5cm,clip]{2451f6a.ps}\hspace*{2mm} \in... ...f6b.ps}\hspace*{2mm} \includegraphics[width=5.5cm,clip]{2451f6c.ps} \end{figure}$ Figure 6: Isothermal collapse: snapshots at different evolutionary stages showing the density structure, velocity field ( only left panel) and block distribution ( middle and right panels). Evolution times in units of the free-fall time are: t=1.008,1.0647,1.0657.
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In the text

$\begin{figure} \par\includegraphics[width=5cm,clip]{2451f8a.ps}\hspace*{2mm} \in... ...51f8b.ps}\hspace*{2mm} \includegraphics[width=5cm,clip]{2451f8c.ps} \end{figure}$ Figure 8: Barotropic collaps without magnetic field: snaphots of the density structure and velocity illustrating the evolution at times t=1.0855,1.112,1.119in units of the free-fall time ( from left to right).
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{2451f9.ps} \end{figure}$ Figure 9: Barotropic collaps without magnetic field: density structure in the coordinate planes (shifted for the x-z and y-z planes) and block distribution in the x-y coordinate plane at time $t=1.119 t_{\rm ff}$ .
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In the text

$\begin{figure} \par\mbox{\includegraphics[width=8.8cm,clip]{2451f10a.ps}\hspace*{4mm} \includegraphics[width=8.8cm,clip]{2451f10b.ps} }\end{figure}$ Figure 10: Barotropic collaps with magnetic field: resulting structure for $(M/\Psi )=2\cdot (M/\Psi )_{\rm crit}$ ( left) and $(M/\Psi )=1.2\cdot (M/\Psi )_{\rm crit}$ ( right). Corresponding evolution times are t=1.444 and t=2.057 in units of the free-fall time.
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In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{2451f1.eps}\end{figure}$	Figure 1: Left: collocation of the MHD variables in a cell [ ijk]. Right: locations of the electric field components and components of the electric field flux tensor.
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$\begin{figure} \par\includegraphics[width=7.5cm,clip]{2451f2.eps} \end{figure}$	Figure 2: Principle of the AMR V-cycle.
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$\begin{figure} \par\includegraphics[width=7.5cm,clip]{2451f3.ps} \end{figure}$	Figure 3: Non-rotating collaps: grey-scale representation of the density structure ( $\log\varrho_{\rm min}=-13.91$ , $\log\varrho_{\rm max}=-9.28$ ) and velocity field in the x-y plane.
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$\begin{figure} \par\includegraphics[width=8cm,clip]{2451f4.ps} \end{figure}$	Figure 4: Non-rotating collaps: cut of $\log\varrho$ along the x-axis.
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$\begin{figure} \par\includegraphics[width=7.7cm,clip]{2451f5a.ps}\par\vspace{2mm} \hspace{6mm}\includegraphics[width=7cm,clip]{2451f5b.ps} \end{figure}$	Figure 5: Rotating collapse: grey-scale representation of the density structure in the x-y plane ( top) and x-z plane ( bottom).
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$\begin{figure} \par\includegraphics[width=5cm,clip]{2451f6a.ps}\hspace{2mm} \in... ...f6b.ps}\hspace{2mm} \includegraphics[width=5.5cm,clip]{2451f6c.ps} \end{figure}$	Figure 6: Isothermal collapse: snapshots at different evolutionary stages showing the density structure, velocity field ( only left panel) and block distribution ( middle and right panels). Evolution times in units of the free-fall time are: t=1.008,1.0647,1.0657.
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$\begin{figure} \par\includegraphics[width=5cm,clip]{2451f7a.ps}\hspace{2mm} \in... ...f7b.ps}\hspace{2mm} \includegraphics[width=5.3cm,clip]{2451f7c.ps} \end{figure}$	Figure 7: Isothermal collapse with vertical magnetic field. Evolution times in units of the free-fall time are: t=1.145,1.2479,1.2482.
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$\begin{figure} \par\includegraphics[width=5cm,clip]{2451f8a.ps}\hspace{2mm} \in... ...51f8b.ps}\hspace{2mm} \includegraphics[width=5cm,clip]{2451f8c.ps} \end{figure}$	Figure 8: Barotropic collaps without magnetic field: snaphots of the density structure and velocity illustrating the evolution at times t=1.0855,1.112,1.119in units of the free-fall time ( from left to right).
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$\begin{figure} \par\includegraphics[width=7cm,clip]{2451f9.ps} \end{figure}$	Figure 9: Barotropic collaps without magnetic field: density structure in the coordinate planes (shifted for the x-z and y-z planes) and block distribution in the x-y coordinate plane at time $t=1.119 t_{\rm ff}$ .
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$\begin{figure} \par\mbox{\includegraphics[width=8.8cm,clip]{2451f10a.ps}\hspace*{4mm} \includegraphics[width=8.8cm,clip]{2451f10b.ps} }\end{figure}$	Figure 10: Barotropic collaps with magnetic field: resulting structure for $(M/\Psi )=2\cdot (M/\Psi )_{\rm crit}$ ( left) and $(M/\Psi )=1.2\cdot (M/\Psi )_{\rm crit}$ ( right). Corresponding evolution times are t=1.444 and t=2.057 in units of the free-fall time.
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