diff --git a/docs/coalition_formation.md b/docs/coalition_formation.md
new file mode 100644
index 0000000..20ee11a
--- /dev/null
+++ b/docs/coalition_formation.md
@@ -0,0 +1,10 @@
+---
+type: Stub
+title: Market-based coalition formation for collaborative transaction construction
+status: draft
+stale_after: 2027-04-15T00:00:00Z
+---
+
+# Market-based coalition formation for collaborative transaction construction
+
+This chapter is under review in [#18](https://github.com/fungi-protocol/docs/pull/18). Its draft is on [the pull request's branch](https://github.com/fungi-protocol/docs/blob/coalition-formation/coalition_formation.md).
diff --git a/docs/collaborative_txn_privacy.md b/docs/collaborative_txn_privacy.md
new file mode 100644
index 0000000..73367b7
--- /dev/null
+++ b/docs/collaborative_txn_privacy.md
@@ -0,0 +1,10 @@
+---
+type: Stub
+title: Collaborative transaction privacy
+status: draft
+stale_after: 2027-04-15T00:00:00Z
+---
+
+# Collaborative transaction privacy
+
+This chapter is under review in [#7](https://github.com/fungi-protocol/docs/pull/7). Its draft is on [the pull request's branch](https://github.com/fungi-protocol/docs/blob/problem-definition/collaborative_txn_privacy.md).
diff --git a/docs/cost_function_abstract.md b/docs/cost_function_abstract.md
new file mode 100644
index 0000000..cbac411
--- /dev/null
+++ b/docs/cost_function_abstract.md
@@ -0,0 +1,10 @@
+---
+type: Stub
+title: Cost function framework for Bitcoin wallets
+status: draft
+stale_after: 2027-04-15T00:00:00Z
+---
+
+# Cost function framework for Bitcoin wallets
+
+This chapter is under review in [#15](https://github.com/fungi-protocol/docs/pull/15). Its draft is on [the pull request's branch](https://github.com/fungi-protocol/docs/blob/cost-function-abstract/cost_function.md).
diff --git a/docs/psbt-concurrent.md b/docs/psbt-concurrent.md
new file mode 100644
index 0000000..180e685
--- /dev/null
+++ b/docs/psbt-concurrent.md
@@ -0,0 +1,10 @@
+---
+type: Stub
+title: Concurrent PSBT Construction
+status: draft
+stale_after: 2027-04-15T00:00:00Z
+---
+
+# Concurrent PSBT Construction
+
+This chapter is under review in [#16](https://github.com/fungi-protocol/docs/pull/16). Its draft is on [the pull request's branch](https://github.com/fungi-protocol/docs/blob/concurrent-psbt/psbt-concurrent.md).