diff --git a/lapack/lapack.go b/lapack/lapack.go
index 7f64a7a9..c78d19c8 100644
--- a/lapack/lapack.go
+++ b/lapack/lapack.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package lapack
+package lapack // import "gonum.org/v1/gonum/lapack"
 
 import "gonum.org/v1/gonum/blas"
 
diff --git a/lapack/testlapack/doc.go b/lapack/testlapack/doc.go
new file mode 100644
index 00000000..76da5d18
--- /dev/null
+++ b/lapack/testlapack/doc.go
@@ -0,0 +1,6 @@
+// Copyright ©2017 The gonum Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package testlapack implements a set of testing routines for Lapack functions.
+package testlapack // import "gonum.org/v1/gonum/lapack/testlapack"
diff --git a/mathext/doc.go b/mathext/doc.go
new file mode 100644
index 00000000..b1c350ee
--- /dev/null
+++ b/mathext/doc.go
@@ -0,0 +1,7 @@
+// Copyright ©2017 The gonum Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package mathext implements special math functions not implemented by the
+// Go standard library.
+package mathext // import "gonum.org/v1/gonum/mathext"
diff --git a/optimize/convex/lp/doc.go b/optimize/convex/lp/doc.go
new file mode 100644
index 00000000..7b084247
--- /dev/null
+++ b/optimize/convex/lp/doc.go
@@ -0,0 +1,6 @@
+// Copyright ©2017 The gonum Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package lp implements routines to solve linear programming problems.
+package lp // import "gonum.org/v1/gonum/optimize/convex/lp"