diff --git a/README.adoc b/README.adoc
index d7351d7..f64437c 100644
--- a/README.adoc
+++ b/README.adoc
@@ -3061,6 +3061,8 @@ Implemented in
 drivers/tty/sysrq.c
 ....
 
+===== Multiple TTYs
+
 Switch between TTYs with:
 
 ....
@@ -3075,6 +3077,7 @@ TODO: only works after I do a `chvt 1`, but then how to put a terminal on `alt-f
 * https://stackoverflow.com/questions/16706423/two-instances-of-busybox-on-separate-serial-lines-ttysn
 * https://serverfault.com/questions/119736/how-to-enable-multiple-virtual-consoles-on-linux
 * https://superuser.com/questions/33065/console-commands-to-change-virtual-ttys-in-linux-and-openbsd
+* https://stackoverflow.com/questions/39373236/redirect-multiple-uarts-in-qemu
 
 Also tried to add some extra lines to `/etc/inittab` of type: