H. Ramfjord

Trends of some airborne tree pollen in the Nordic countries and Austria, 1980—1993

M. Helander, S. Jäger, S. Nilsson, 1996 .

On the Late Weichselian and Flandrian shoreline displacement in Nærøy, Nord-Trøndelag, Norway

H. Ramfjord, 1982 .

The start dates of birch pollen seasons in Fennoscandia studied by NOAA AVHRR NDVI data

Stein Rune Karlsen, Kjell Arild Høgda, Inger Solheim, 2002, IEEE International Geoscience and Remote Sensing Symposium.

A statistical model for predicting the inter-annual variability of birch pollen abundance in Northern and North-Eastern Europe.

M. Sofiev, Å. Dahl, O. Ritenberga, 2018, The Science of the total environment.

Outdoor appearance of aeroallergens in norway

H. Ramfjord, 1991 .

A satellite-based map of onset of birch (Betula) flowering in Norway

Stein Rune Karlsen, Kjell Arild Høgda, Bernt Johansen, 2009 .

Influence of spatiotemporal and meteorological variation on Norwegian atmospheric pollen seasonality

H. Ramfjord, Carl A. Frisk, T. E. Brobakk, 2024, Agricultural and Forest Meteorology.