c++ - Template class constructor

Ok guys...
I have following class

#include 
template >
class BinarySearchTree {
    struct TNode {
        TValue value;
        TNode *pLeft;
        TNode *pRight;
    };
public:
    BinarySearchTree();
    ~BinarySearchTree();
    . . .
private:
    TNode *pRoot;
     . . .
};

then in my .cpp file i defined the ctor/dtor like this:

template 
BinarySearchTree::BinarySearchTree() : pRoot(0) {}
template 
BinarySearchTree::~BinarySearchTree() {
    Flush(pRoot);
}

my main function:

int main() {
    BinarySearchTree obj1;
    return 0;
}

and i get following linkage error:

public: __thiscall BinarySearchTree>::BinarySearchTree >(void)

i tried to put the constructor definition into the header file and i get no error. only if i try to define it in the cpp file.