diff --git a/src/data/calendar.rs b/src/data/calendar.rs
index 94c2fa9..b4d7482 100644
--- a/src/data/calendar.rs
+++ b/src/data/calendar.rs
@@ -1,24 +1,21 @@
-use crate::data::TaskView;
-
-/// A Caldav Calendar
-pub struct Calendar {
-    name: String,
-
-    tasks: Vec<TaskView>,
-}
-
-impl Calendar {
-    pub fn name() -> String {
-        self.name
-    }
-
-    pub fn tasks() -> Vec<TaskView> {
-        self.tasks
-    }
-}
-
-impl Drop for Calendar {
-    fn drop(&mut self) {
-        // TODO: display a warning in case some TaskViews still have a refcount > 0
-    }
-}
+use crate::data::Task;
+
+/// A Caldav Calendar
+pub struct Calendar {
+    name: String,
+
+    tasks: Vec<Task>,
+}
+
+impl Calendar {
+    pub fn name(&self) -> String {
+        self.name
+    }
+
+    pub fn tasks(&self) -> Vec<&Task> {
+        self.tasks
+            .iter()
+            .map(|t| &t)
+            .collect()
+    }
+}
diff --git a/src/data/mod.rs b/src/data/mod.rs
index 05eb0d8..9e14d79 100644
--- a/src/data/mod.rs
+++ b/src/data/mod.rs
@@ -12,16 +12,11 @@ pub use calendar::Calendar;
 pub use tasks::Task;
 use client::Client;
 
-// TODO: consider using references here
-//       (there will be no issue with still-borrowed-data when the DataSource is destroyed, but will it play well with sync stuff?)
-type CalendarView = Arc<Calendar>;
-type TaskView = Arc<Task>;
-
 /// A Caldav data source
 pub struct DataSource {
     client: Option<Client>,
 
-    calendars: Vec<CalendarView>
+    calendars: Vec<Calendar>
 }
 
 impl DataSource {
@@ -43,13 +38,10 @@ impl DataSource {
         // TODO: how to handle conflicts?
     }
 
-    pub fn calendars(&self) -> Vec<CalendarView> {
+    pub fn calendars(&self) -> Vec<&Calendar> {
         self.calendars
-    }
-}
-
-impl Drop for DataSource {
-    fn drop(&mut self) {
-        // TODO: display a warning in case some CalendarViews still have a refcount > 0
+            .iter()
+            .map(|c| &c)
+            .collect()
     }
 }