--- a/src/spectrum/model/spectrum-error-model.h	Wed May 18 20:01:44 2011 -0400
+++ b/src/spectrum/model/spectrum-error-model.h	Wed May 18 17:24:04 2011 -0700
@@ -32,6 +32,10 @@
 
 
 
+/**
+ * \ingroup spectrum
+ *
+ */
 class SpectrumErrorModel :  public Object
 {
 public:
@@ -43,6 +47,8 @@
 
 
 /**
+ * \ingroup spectrum
+ *
  * This class implements the error model described in this paper:
  * N. Baldo and M. Miozzo, "Spectrum-aware Channel and PHY layer modeling
  * for ns3", in Proceedings of International Workshop on Network