Stack vs Heap
http://dis.dankook.ac.kr/lectures/hci10/entry/Stack과-Heap-비교
http://stackoverflow.com/questions/79923/what-and-where-are-the-stack-and-heap

C# ValueType vs Reference Type
http://dis.dankook.ac.kr/lectures/hci10/entry/Value-Type과-Reference-Type의-비교

C# Boxing vs Unboxing
http://dis.dankook.ac.kr/lectures/hci10/entry/Boxing과-Unboxing-비교

C# Convert.ToInt32 vs Int32.Parse vs Int32.TryParse
http://dis.dankook.ac.kr/lectures/hci10/entry/ConvertToInt32와-Int32Parse와-Int32TryParse-비교