diff --git a/src/Main.java b/src/Main.java
index a5f0b3b..5f858aa 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -3,10 +3,10 @@
 public class Main {
 	private static ISubscriber subscribers [] = {
 
-			new SphereArea(), new LucasSeries(),
+			new SphereArea(), new LucasSeries(), new CircleArea()
+			, new SphereCircumference() , new summationSeries(),	new SphereArea(), new LucasSeries(),
 			new Spherevolume()
-
-	};
+  };
 	public static void main(String[] args) {
 		Topic mathTopic = new Topic();
 		for (ISubscriber sub : subscribers) {