diff --git a/matlab/@dynDates/sort.m b/matlab/@dynDates/sort.m
index 32b2abe71..62fba94e1 100644
--- a/matlab/@dynDates/sort.m
+++ b/matlab/@dynDates/sort.m
@@ -77,4 +77,27 @@ dd.time = sortrows(dd.time,[1,2]);
 %$ t(2) = dyn_assert(d.freq,e.freq);
 %$ t(3) = dyn_assert(d.ndat,e.ndat);
 %$ T = all(t);
+%@eof:1
+
+%@test:1
+%$ % Define some dates
+%$ B1 = '1953Q4';
+%$ B2 = '1950Q2';
+%$ B3 = '1950Q1';
+%$ B4 = '1945Q3';
+%$
+%$ % Define expected results.
+%$ e.time = [1945 3; 1950 1; 1950 2; 1953 4];
+%$ e.freq = 4;
+%$ e.ndat = 4;
+%$
+%$ % Call the tested routine.
+%$ d = dynDates(B1,B2,B3,B4);
+%$ d = d.sort();
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(d.time,e.time);
+%$ t(2) = dyn_assert(d.freq,e.freq);
+%$ t(3) = dyn_assert(d.ndat,e.ndat);
+%$ T = all(t);
 %@eof:1
\ No newline at end of file
diff --git a/matlab/@dynDates/subsref.m b/matlab/@dynDates/subsref.m
index 65cc3c354..e57bdd389 100644
--- a/matlab/@dynDates/subsref.m
+++ b/matlab/@dynDates/subsref.m
@@ -54,9 +54,15 @@ switch S(1).type
   case '.'
     switch S(1).subs
       case {'time','freq','ndat'}% Access public members.
+        if length(S)>1 && isequal(S(2).type,'()') && isempty(S(2).subs)
+            error(['dynDates::subsref: ' S(1).subs ' is not a method but a member!'])
+        end
         B = builtin('subsref', A, S(1));
       case {'sort','unique'}% Public methods (without arguments)
         B = feval(S(1).subs,A);
+        if length(S)>1 && isequal(S(2).type,'()') && isempty(S(2).subs)
+           S = shiftS(S);
+        end
       case {'append','pop'}% Public methods (with arguments).
         if isequal(S(2).type,'()')
             B = feval(S(1).subs,A,S(2).subs{:});
@@ -134,4 +140,26 @@ end
 %$     t(4) = dyn_assert(d.ndat,2);
 %$ end
 %$ T = all(t);
+%@eof:2
+
+%@test:3
+%$ % Define a dynDates object
+%$ B = dynDate('1950Q1'):dynDate('1960Q3');
+%$
+%$ % Try to extract a sub-dynDates object and apply a method
+%$
+%$ d = B(2:3).sort() ;
+%$
+%$ if isa(d,'dynDates')
+%$     t(1) = 1;
+%$ else
+%$     t(1) = 0;
+%$ end
+%$
+%$ if t(1)
+%$     t(2) = dyn_assert(d.freq,B.freq);
+%$     t(3) = dyn_assert(d.time,[1950 2; 1950 3]);
+%$     t(4) = dyn_assert(d.ndat,2);
+%$ end
+%$ T = all(t);
 %@eof:2
\ No newline at end of file