communications of the "van der waals-fund" On discontinuities in the energy and the specific heat / A. Bijl communications of the "van der waals-fund" influence of pressure on the solubility of gases / A. Michels, J. Gerver and A. Bijl Tsars and Knights : the Romanovs’ love affair with the middle ages / scholarly editor prof. dr. Georgy Vilinbakhov ; authors of essays Andrey Bogdanov, …