diff --git a/docs/reference/systems/isq.rst b/docs/reference/systems/isq.rst
index 8811f9e9..81ae45d0 100644
--- a/docs/reference/systems/isq.rst
+++ b/docs/reference/systems/isq.rst
@@ -22,4 +22,5 @@ Systems of Units based on the SI
     isq/si_imperial
     isq/si_fps
     isq/si_iau
+    isq/si_hep
     isq/si_typographic
diff --git a/docs/reference/systems/isq/si/hep/area.rst b/docs/reference/systems/isq/si/hep/area.rst
new file mode 100644
index 00000000..e6f9d5fc
--- /dev/null
+++ b/docs/reference/systems/isq/si/hep/area.rst
@@ -0,0 +1,4 @@
+Area
+====
+
+.. doxygenfile:: si/hep/area.h
diff --git a/docs/reference/systems/isq/si/hep/energy.rst b/docs/reference/systems/isq/si/hep/energy.rst
new file mode 100644
index 00000000..a05e04b3
--- /dev/null
+++ b/docs/reference/systems/isq/si/hep/energy.rst
@@ -0,0 +1,4 @@
+Energy
+======
+
+.. doxygenfile:: si/hep/energy.h
diff --git a/docs/reference/systems/isq/si/hep/mass.rst b/docs/reference/systems/isq/si/hep/mass.rst
new file mode 100644
index 00000000..3ce4448d
--- /dev/null
+++ b/docs/reference/systems/isq/si/hep/mass.rst
@@ -0,0 +1,4 @@
+Mass
+====
+
+.. doxygenfile:: si/hep/mass.h
diff --git a/docs/reference/systems/isq/si/hep/momentum.rst b/docs/reference/systems/isq/si/hep/momentum.rst
new file mode 100644
index 00000000..d1d1cdab
--- /dev/null
+++ b/docs/reference/systems/isq/si/hep/momentum.rst
@@ -0,0 +1,4 @@
+Momentum
+========
+
+.. doxygenfile:: si/hep/momentum.h
diff --git a/docs/reference/systems/isq/si_hep.rst b/docs/reference/systems/isq/si_hep.rst
new file mode 100644
index 00000000..f4d444e5
--- /dev/null
+++ b/docs/reference/systems/isq/si_hep.rst
@@ -0,0 +1,10 @@
+HEP (based on SI)
+=================
+
+.. toctree::
+    :maxdepth: 2
+
+    si/hep/area
+    si/hep/energy
+    si/hep/mass
+    si/hep/momentum