ISBN 952-5354-45-8. Ylikangas, Heikki (1986), Käännekohdat Suomen historiassa, Juva: WSOY, ISBN 951-0-13745-6 Ylikangas, Heikki (1993a), Tie Tampereelle, Porvoo:
Palmu from Vyborg, since 27 February by the infamous Red Guard leader HeikkiKaljunen, after his resignation in March by Oskar Rantala and for the last three