This map shows the geographic impact of Yrjö Collan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Yrjö Collan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Yrjö Collan more than expected).
This network shows the impact of papers produced by Yrjö Collan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Yrjö Collan. The network helps show where Yrjö Collan may publish in the future.
Co-authorship network of co-authors of Yrjö Collan
This figure shows the co-authorship network connecting the top 25 collaborators of Yrjö Collan.
A scholar is included among the top collaborators of Yrjö Collan based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with Yrjö Collan. Yrjö Collan is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Ikpatt, Offiong F., et al.. (2002). Histopathology of breast cancer in different populations: Comparative analysis for Finland and Africa. 8(4). 24011–24018.4 indexed citations
3.
Collan, Yrjö, et al.. (1992). Experiences on the use of the disector principle in neuropathology. Image Analysis & Stereology.7 indexed citations
4.
Lipponen, P. & Yrjö Collan. (1992). Simple quantitation of immunohistochemical staining positivity in microscopy for histopathology routine. Image Analysis & Stereology.14 indexed citations
Collan, Yrjö. (1987). Studying cells with different methods in serial sections: principles of matching. Image Analysis & Stereology.1 indexed citations
Luoma, H., et al.. (1984). Reduction of the lethality and the nephrocalcinotic effect of single fluoride doses by magnesium in rats.. PubMed. 3(2). 81–7.5 indexed citations
9.
Collan, Yrjö, et al.. (1984). Stereologic and morphometric measurements in diagnostic histopathology: statistical considerations. Image Analysis & Stereology.3 indexed citations
10.
Kosma, Veli‐Matti, et al.. (1984). Reproducibility in morphometric assessment of positive staining for CEA in ovarian tumours. Image Analysis & Stereology.2 indexed citations
11.
Aalto, Marja-Leena & Yrjö Collan. (1983). Periodic acid-Schiff (PAS) stain in serous tumours and clear cell carcinomas of the ovary. A morphometric study. Image Analysis & Stereology.3 indexed citations
12.
Jantunen, Esa, Timo Romppanen, & Yrjö Collan. (1983). Diffuse myocardial fibrosis in ischaemic heart disease. Image Analysis & Stereology.1 indexed citations
13.
Oja, Erkki & Yrjö Collan. (1983). Basic principles of image analysis by a computer. Image Analysis & Stereology.1 indexed citations
14.
Syrjänen, Karí, Veli‐Matti Kosma, & Yrjö Collan. (1983). Item classification and grading: an approach to non-mathematical morphometry. Image Analysis & Stereology.1 indexed citations
15.
Collan, Yrjö, et al.. (1983). Morphometry of kidney biopsy: number of glomeruli and accuracy of morphometric measurements. Image Analysis & Stereology.1 indexed citations
16.
Kosma, Veli‐Matti, et al.. (1983). Observer variation and reproducibility of grading: analysis of the postcapillary venules in human axillary lymph nodes using subjective and morphometric methods. Image Analysis & Stereology.1 indexed citations
17.
Collan, Yrjö, Erkki Oja, & W F Whimster. (1983). Mathematical background to stereology and morphometry for diagnostic pathologists. Image Analysis & Stereology.11 indexed citations
18.
Aalto, Marja-Leena, Yrjö Collan, Timo Romppanen, & K Lauslahti. (1982). Morphometric approach to immunohistochemistry: carcinoembryonic antigen (CEA) in ovarian tumours. Image Analysis & Stereology.1 indexed citations
19.
Collan, Yrjö, Juhani Lähdevirta, & E. J. Jokinen. (1978). Electron microscopy of nephropathia epidemica. Renal tubular basement membrane.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 92(1). 167–72.13 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.