fixed doxygen issue

Algebraic_kernel_d/doc/Algebraic_kernel_d/CGAL/Algebraic_kernel_d_2.h

@@ -4,17 +4,20 @@ namespace CGAL {
 /*!
 \ingroup PkgAlgebraicKerneldModels
 
+This class gathers necessary tools for solving and handling bivariate 
+polynomial systems of general degree \f$ d\f$.
+
 This class is based on an algorithm computing a 
-geometric-topological analysis of a single curve \cgalCite{ekw-fast-07} and of a 
-pair of curves \cgalCite{ek-exact-08}. 
+geometric-topological analysis of a single curve \cite ekw-fast-07 and of a 
+pair of curves \cite ek-exact-08. 
 The main idea behind both analyses is to compute the critical 
 x-coordinates of curves and curve pairs by projection (resultants), and compute 
 additional information about the critical fibers using subresultants 
-and Sturm-Habicht sequences \cgalCite{grlr-sturm-habicht-98}. 
+and Sturm-Habicht sequences \cite grlr-sturm-habicht-98. 
 With that information, the fiber at 
 critical x-coordinates is computed by a variant of the Bitstream 
 Descartes method. 
-See also \cgalCite{kerber-phd-09} for a comprehensive description of 
+See also \cite kerber-phd-09 for a comprehensive description of 
 these techniques. 
 
 A point \f$ p\f$ of type `Algebraic_real_2` is represented 
@@ -59,22 +62,22 @@ public:
 /// \name Types 
 /// @{
 
-/*!
+/*! 
 Same type as the template argument `Coeff`. 
 */ 
 typedef unspecified_type Coefficient; 
 
-/*!
+/*! 
 A model of `AlgebraicKernel_d_2::Polynomial_2` 
 */ 
 typedef unspecified_type Polynomial_2; 
 
-/*!
+/*! 
 A model of `AlgebraicKernel_d_2::AlgebraicReal_2` 
 */ 
 typedef unspecified_type Algebraic_real_2; 
 
-/*!
+/*! 
 The choice of `Coeff` also determines the provided bound, type. 
 In case of `Coeff` is 
 - `Gmpz` or `Gmpq` this is `Gmpq` 
@@ -86,7 +89,7 @@ In case of `Coeff` is
 */ 
 typedef unspecified_type Bound; 
 
-/*!
+/*! 
 The multiplicity type is `int`. 
 */ 
 typedef unspecified_type Multiplicity_type;