diff --git a/docs/pods.md b/docs/pods.md
index adbf977617..4fca1b3f6d 100644
--- a/docs/pods.md
+++ b/docs/pods.md
@@ -62,7 +62,7 @@ Pods aren't intended to be treated as durable pets. They won't survive schedulin
 
 In general, users shouldn't need to create pods directly. They should almost always use controllers (e.g., [replication controller](replication-controller.md)), even for singletons.  Controllers provide self-healing with a cluster scope, as well as replication and rollout management. 
 
-The use of collective APIs as the primary user-facing primitive is relatively common among cluster scheduling systems, including [Borg](http://eurosys2015.labri.fr/program/papers/), [Marathon](https://mesosphere.github.io/marathon/docs/rest-api.html, https://github.com/gambol99/go-marathon/blob/master/application.go), [Aurora](http://aurora.apache.org/documentation/latest/configuration-reference/#job-schema), and [Tupperware](http://www.slideshare.net/Docker/aravindnarayanan-facebook140613153626phpapp02-37588997).
+The use of collective APIs as the primary user-facing primitive is relatively common among cluster scheduling systems, including [Borg](https://research.google.com/pubs/pub43438.html), [Marathon](https://mesosphere.github.io/marathon/docs/rest-api.html, https://github.com/gambol99/go-marathon/blob/master/application.go), [Aurora](http://aurora.apache.org/documentation/latest/configuration-reference/#job-schema), and [Tupperware](http://www.slideshare.net/Docker/aravindnarayanan-facebook140613153626phpapp02-37588997).
 
 Pod is exposed as a primitive in order to facilitate:
 * scheduler and controller pluggability