3-NIRVANA-user-guide/3.2-User-interfaces.md

@@ -657,7 +657,7 @@ for the type of coordinate system.
         isotropic conduction).
 
     -   `_C.conduction_coeff_sat` (typical value: 0.3): parameter *Ψ* in
-        the saturation heat flux model of (cf. physics guide
+        the saturation heat flux model of \[CM77\] (cf. physics guide
         [Wiki](https://gitlab.aip.de/ziegler/NIRVANA/-/wikis/C-NumericsGuide),
         [PDF](https://gitlab.aip.de/ziegler/NIRVANA/doc/pdf/NumericsGuide.pdf)).
 
@@ -1004,7 +1004,7 @@ Here, the IC for the Orszag-Tang problem (example 1) and a shock-cloud
 interaction problem (example 2) are presented as examples. Both are MHD
 problems.
 
-**Example 1** (taken from `/nirvana/testproblems/MHD/problem2`; cf. )
+**Example 1** (taken from `/nirvana/testproblems/MHD/problem2`; cf. \[Zie04\])
 
 IC for the Orszag-Tang problem simulated in a doubly-periodic square
 domain of length *L* (given by `_C.up[0]-_C.lo[0]`):
@@ -1085,7 +1085,7 @@ permeability *μ*=1.
 Example 1 uses the macro `SPQR(a,b,c)` which shortcuts the algebraic
 expression *a*<sup>2</sup> + *b*<sup>2</sup> + *c*<sup>2</sup>.
 
-**Example 2** (taken from `/nirvana/testproblems/MHD/problem17`; cf. )
+**Example 2** (taken from `/nirvana/testproblems/MHD/problem17`; cf. \[Zie05\])
 
 IC for the shock-cloud interaction problem simulated in a Cartesian box
 given by (*x*, *y*, *z*) ∈ \[ − 1/2, 1/2\]<sup>3</sup>:
@@ -2090,6 +2090,12 @@ values (given in brackets).
     *ε*(𝜚) as a function of 𝜚 in cases without energy equation.
     Otherwise identity.  
 
+**References**
+
+[CM77] L.L. Cowie and C.F. McKee. In: ApJ 211 (1977), p. 135.    
+[Zie04]  U. Ziegler. In: JCoPh 196 (2004), p. 393. doi: 10.1016/j.jcp.2003.11.003.  
+[Zie05]  U. Ziegler. In: CoPhC 170 (2005), p. 153. doi: 10.1016/j.cpc.2005.04.002.  
+
 &nbsp;
 
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