Index: concepts.qbk
===================================================================
--- concepts.qbk	(revision 61162)
+++ concepts.qbk	(working copy)
@@ -238,6 +238,50 @@
 
 [endsect]
 
+[section Quasi-Random Number Generator]
+
+A quasi-random number generator is a __PseudoRandomNumberGenerator which
+provides a deterministic sequence of quasi-random numbers, based on some
+algorithm and internal state. [classref boost::random::niederreiter_base2
+Niederreiter Base 2] generator is an example of such a [qrng quasi-random
+number generator]. The "quasi" modifier is used to denote more clearly that the
+values produced by such a generator are neither random nor pseudo-random, but
+they form a low discrepancy sequence.  Intuitively, a low discrepancy 
+sequence is more evenly distributed than a truly random sequence would be.
+For example, if we generate a low discrepancy sequence of 2D points on a
+square, the number of points falling to any part of the square would be
+proportional to the number of points in the whole square.
+Such sequences share some properties of  random variables and in certain
+applications  such as the quasi-Monte Carlo method  their lower discrepancy
+is an important advantage.
+
+[note Quasi-random sequences are known to give efficient numerical integration 
+rules in many Bayesian statistical problems where the posterior distribution
+can be  transformed into periodic functions on the n-dimensional hypercube.]
+
+Harold Niederreiter gives an extensive overview on random number generation
+and quasi-Monte Carlo methods in his book "Random number generation and
+quasi-Monte Carlo methods, Society for Industrial and Applied Mathematics, 1992". 
+
+In addition to the __PseudoRandomNumberGenerator requirements,
+a quasi-random number generator has some additional requirements. In the
+following table, `X` denotes a quasi-random number generator class, and `v` is 
+a const value of `X`.
+
+[table QuasiRandomNumberGenerator requirements
+  [[expression] [return type] [pre/post-condition]]
+  [[`X::dimension()`] [std::size_t] [the dimension of quasi-random domain. It must be no less than 1.
+                        The return value of this function shall not change during the lifetime of the object.]]
+ ]
+
+[note The `operator()` returns a successive element of an n-dimensional (n = `X::dimension`) vector 
+at each invocation. When all elements are exhausted, `operator()` begins anew with the starting
+element of a subsequent n-dimensional vector.]
+
+The class __niederreiter_base2 is a model for a quasi-random number generator.
+
+[endsect]
+
 [section Random Distribution]
 
 A random distribution produces random numbers distributed according to some
Index: random.qbk
===================================================================
--- random.qbk	(revision 61162)
+++ random.qbk	(working copy)
@@ -13,12 +13,15 @@
 [template sup[text]'''<superscript>'''[text]'''</superscript>''']
 
 [template prng[text] [link boost_random.reference.concepts.pseudo_random_number_generator [text]]]
+[template qrng[text] [link boost_random.reference.concepts.quasi_random_number_generator [text]]]
 [template concepts[text] [link boost_random.reference.concepts [text]]]
 [template generators[text] [link boost_random.reference.generators [text]]]
 [template distributions[text] [link boost_random.reference.distributions [text]]]
 
 [def __NumberGenerator [link boost_random.reference.concepts.number_generator NumberGenerator]]
 [def __UniformRandomNumberGenerator [link boost_random.reference.concepts.uniform_random_number_generator UniformRandomNumberGenerator]]
+[def __PseudoRandomNumberGenerator [link boost_random.reference.concepts.pseudo_random_number_generator PseudoRandomNumberGenerator]]
+[def __QuasiRandomNumberGenerator [link boost_random.reference.concepts.quasi_random_number_generator QuasiRandomNumberGenerator]]
 
 [def __CopyConstructible [@boost:/doc/html/CopyConstructible.html CopyConstructible]]
 [def __Assignable [@boost:/doc/html/Assignable.html Assignable]]
@@ -39,6 +42,7 @@
 [def __hellekalek1995 [classref boost::hellekalek1995 hellekalek1995]]
 [def __mt11213b [classref boost::mt11213b mt11213b]]
 [def __mt19937 [classref boost::mt19937 mt19937]]
+[def __niederreiter_base2 [classref boost::random::niederreiter_base2 niederreiter_base2]]
 [def __lagged_fibonacci607 [classref boost::lagged_fibonacci607 lagged_fibonacci607]]
 [def __lagged_fibonacci1279 [classref boost::lagged_fibonacci1279 lagged_fibonacci1279]]
 [def __lagged_fibonacci2281 [classref boost::lagged_fibonacci2281 lagged_fibonacci2281]]
Index: Jamfile.v2
===================================================================
--- Jamfile.v2	(revision 61162)
+++ Jamfile.v2	(working copy)
@@ -29,6 +29,7 @@
     linear_feedback_shift
     lognormal_distribution
     mersenne_twister
+    niederreiter_base2
     normal_distribution
     poisson_distribution
     random_number_generator