diff --git a/seminar04_templates/07_manager/main.cpp b/seminar04_templates/07_manager/main.cpp
deleted file mode 100644
index 870865b..0000000
--- a/seminar04_templates/07_manager/main.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-#include <iostream>
-#include <string>
-
-template <typename T>
-class Manager {
-private:
-        T* mPtr;
-public:
-        Manager() {
-            mPtr = nullptr;
-        }
-        void allocate() {
-            mPtr = (T*)malloc(sizeof(T));
-        }
-        void construct(const T& t) {
-            new(mPtr) T{t};
-        }
-        T& get() {
-            return *mPtr;
-        }
-        void destruct() {
-            mPtr->~T();
-        }
-        void deallocate() {
-            free(mPtr);
-        }
-};
-
-int main() {
-    Manager<std::string> a;
-    a.allocate();
-    a.construct("Cats and dogs");
-    a.get() += " and elephants";
-    std::cout << a.get() << std::endl;
-    a.destruct();
-
-    a.construct("Sapere aude");
-    std::cout << a.get() << std::endl;
-
-    a.destruct();
-    a.deallocate();
-}
diff --git a/seminar04_templates/08_ref/main.cpp b/seminar04_templates/08_ref/main.cpp
deleted file mode 100644
index 1f9f0f9..0000000
--- a/seminar04_templates/08_ref/main.cpp
+++ /dev/null
@@ -1,74 +0,0 @@
-#include <iostream>
-#include <string>
-#include <vector>
-
-using std::cout, std::endl, std::string, std::vector;
-
-template <typename T>
-class Ref {
-private:
-        T* mPtr;
-public:
-        Ref(T& t) {
-            mPtr = &t;
-        }
-        Ref(Ref& t) {
-            mPtr = t.mPtr;
-        }
-        Ref() {
-            mPtr = nullptr;
-        }
-        T& get() {
-            return *mPtr;
-        }
-        T operator=(const T& t) {
-            new(mPtr) T{t};
-            return *mPtr;
-        }
-        T operator+(const T& t) {
-            return *mPtr + t;
-        } 
-        T operator+=(const T& t) {
-            *mPtr = *mPtr + t;
-            return *mPtr;
-        }
-        T* operator->() {
-            return mPtr;
-        }
-        template <typename U>
-        friend std::ostream& operator<<(std::ostream& out, Ref<U> r);
-};
-
-template <typename T>
-std::ostream& operator<<(std::ostream& out, Ref<T> r) {
-    out << *(r.mPtr);
-    return out;
-}
-
-void toUpper(Ref<string> r) {
-    for(size_t i = 0; i < r->size(); ++i)
-        r.get()[i] = toupper(r.get()[i]); 
-}
-
-int main() {
-    int a = 10;
-    Ref<int> ra = a;
-    cout << ra << endl;
-
-    string s = "Cat";
-    Ref<string> rs = s;
-    rs = "Mouse";
-    rs += "Elephant";
-    cout << rs << endl;
-    cout << s << endl;
-
-    toUpper(s);
-    cout << s << endl;
-
-    vector<string> animals {"Cat", "Dogs", "Elephants", "Worms"};
-    vector<Ref<string>> refs {animals.begin(), animals.end()};
-
-    for (int i = 0; i < refs.size(); ++i)
-            cout << animals[i] << " ";
-    cout << endl;
-}