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diff --git a/src/internal/Row.h b/src/internal/Row.h
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+++ b/src/internal/Row.h
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+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen is free software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the Free Software
+// Foundation; either version 2 or (at your option) any later version.
+//
+// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+// details.
+//
+// You should have received a copy of the GNU General Public License along
+// with Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EI_ROW_H
+#define EI_ROW_H
+
+template<typename MatrixType> class EiRow
+  : public EiObject<typename MatrixType::Scalar, EiRow<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class EiObject<Scalar, EiRow<MatrixType> >;
+
+    static const int RowsAtCompileTime = 1,
+                     ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    EiRow(const MatRef& matrix, int row)
+      : m_matrix(matrix), m_row(row)
+    {
+      EI_CHECK_ROW_RANGE(matrix, row);
+    }
+    
+    EiRow(const EiRow& other)
+      : m_matrix(other.m_matrix), m_row(other.m_row) {}
+    
+    template<typename OtherDerived>
+    EiRow& operator=(const EiObject<Scalar, OtherDerived>& other)
+    {
+      return EiObject<Scalar, EiRow<MatrixType> >::operator=(other);
+    }
+    
+    EI_INHERIT_ASSIGNMENT_OPERATORS(EiRow)
+    
+  private:
+    EiRow& _ref() { return *this; }
+    const EiRow& _constRef() const { return *this; }
+    
+    int _rows() const { return 1; }
+    int _cols() const { return m_matrix.cols(); }
+    
+    Scalar& _write(int row, int col)
+    {
+      EI_UNUSED(row);
+      return m_matrix.write(m_row, col);
+    }
+    
+    Scalar _read(int row, int col) const
+    {
+      EI_UNUSED(row);
+      return m_matrix.read(m_row, col);
+    }
+    
+  protected:
+    MatRef m_matrix;
+    const int m_row;
+};
+
+template<typename Scalar, typename Derived>
+EiRow<Derived>
+EiObject<Scalar, Derived>::row(int i)
+{
+  return EiRow<Derived>(static_cast<Derived*>(this)->ref(), i);
+}
+
+#endif // EI_ROW_H